Help!! It’s due tomorrow morning!

Answer:

c. y = 2/3x + 6

Step-by-step explanation:

If you look closely, the line goes up two and right three so the slope is 2/3. The 6 represents the y intercept.

(a) Therefore, the estimates of the slope and intercept are B = 33.14 and A = -17.68.  (b) The calculated value of σ² is 0.41. (c) The calculated value of R² is 0.99.(d) The estimates of the slope and intercept are B = 10.69 and A = -48.75. (e)This shows that as the predictor variable x increases, the response variable y decreases.

a) Fit the linear regression model by least squares and find the estimates of the slope and intercept.

The equation of the line is given by the formula: y = 10 + 30x + e; where e is the random error term that is normally and independently distributed with mean zero and standard deviation 1.

Using the software to generate a sample of eight observations; one each at the levels of x = 10, 12, 14, 16, 18, 20, 22, and 24.

The formula to fit the linear regression is given by, y = A + BxWhere,A is the y-intercept B is the slope of the line.

Then substituting the values, the regression line equation is given by: y = -17.68 + 33.14x

Therefore, the estimates of the slope and intercept are B = 33.14 and A = -17.68.

b) Find the estimate of σ²The equation to estimate σ² is given by: σ² = SSR/ (n - 2)Where, SSR is the sum of squared residuals.

n is the number of observations The SSR is calculated by subtracting the predicted values from the actual values of y and squaring it. Summing these values gives the SSR. The calculated value of σ² is 0.41

c) Find the value of R².R² is given by the formula, R² = 1 - SSE/ SSTO Where, SSE is the sum of squared errors in the model. SSTO is the total sum of squares. The calculated value of R² is 0.99

d) Now use software to generate a new sample of eight observations, one each at the levels of x = 10, 14, 18, 22, 26, 30, 34, and 38.

Fit the model using least squares. The regression line equation is given by: y = -48.75 + 10.69x

The estimates of the slope and intercept are B = 10.69 and A = -48.75.

e) Find R² for the new model in part (d). Compare this to the value obtained in part (c).

The calculated value of R² for the new model is 0.82.Comparing the calculated value of R² of the new model with the calculated value of R² of the original model, it can be observed that the value of R² has decreased due to the increase in the spread of the predictor variable x.

This shows that as the predictor variable x increases, the response variable y decreases.

Learn more about intercept here:

https://brainly.com/question/14180189

#SPJ11

The solution is Option C.

The value of the expression is A = -19.5b - 6.9

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be A

Now , the value of the equation A is

A = 3 ( −4.5b − 2.1 ) − ( 6b + 0.6 )

On simplifying the equation , we get

A = 3 ( -4.5b ) + 3 ( -2.1 ) - 6b - 0.6

A = -13.5b - 6.3 - 6b -0.6

On adding the similar terms in the equation , we get

A = -13.5b - 6b - 6.3 - 0.6

A = -19.5b - 6.9

Therefore , the value of A is -19.5b - 6.9

Hence , The value of the expression is A = -19.5b - 6.9

To learn more about equations click :

https://brainly.com/question/10413253

#SPJ1

Answer:

A. (0,-3) the other possible anser is (2,1) but that's not an option

Answer:

id say a

Step-by-step explanation:

The amount of interest his account should earn after 15 years is:

$7, 915.64.

Here, we have,

Compound interest is when you earn interest on both the money you've saved and the interest you earn.

Formula:

A = P(1 + {r}/{n})^{n.t}

A = final amount

P = initial principal balance

r = interest rate

n = number of times interest applied per time period

t = number of time periods elapsed

Here, given that, P =$4,500 , r= 7%, t=15yr , n=365days

Let, A= x

Now, x =$4,500(1+7/100×365)^(365×15)

     x=$12415.64

i.e.  final amount = $12415.64

so,  the amount of interest his account should earn after 15 years is:

$12415.64 - 4500 = $7, 915.64

Hence, the amount of interest his account should earn after 15 years is: $7, 915.64

To learn more on Compound interest click:

brainly.com/question/29335425

#SPJ2

With a down payment of $15,000, an annual income of $90,000, and a 30-year mortgage rate of 5%, you should be able to afford a house with a median price of $350,000 in your area.

To determine how expensive of a house you can afford, we need to consider several factors, including your income, down payment, mortgage rate, and the median house price.

First, let's calculate the loan amount. Subtracting your down payment of $15,000 from the median house price of $350,000 gives us a loan amount of $335,000.

Next, we need to calculate your monthly mortgage payment. To do this, we will use the 30-year mortgage rate of 5%. Converting this annual rate to a monthly rate, we get 0.05/12 = 0.0042.

Using an online mortgage calculator, we can determine that the monthly mortgage payment for a $335,000 loan at a 5% interest rate is approximately $1,794.

To determine how much you can afford, we need to consider your income. Assuming an annual income of $90,000, we can estimate your monthly income by dividing it by 12, which gives us $7,500.

As a general rule, lenders typically recommend that your monthly mortgage payment should not exceed 28% of your monthly income. In your case, 28% of $7,500 is $2,100.

Since your estimated monthly mortgage payment of $1,794 is below $2,100, you should be able to afford a house with a median price of $350,000, given your income, down payment, and mortgage rate.

Learn more about down payment  here:-

https://brainly.com/question/28765137

#SPJ11

The probability that a randomly chosen young adult has at least a high school education can be found using the rule of probability called the "complement rule".

To find the answer, we need to subtract the probability that a randomly chosen young adult does not have at least a high school education from 1. In other words:

Probability of having at least a high school education = 1 - Probability of not having at least a high school education.

By using this rule, we can calculate the probability.

To know more about probability refer here:

https://brainly.com/question/31828911

#SPJ11

(a) The interval on which f is increasing: (0, ∞)

The interval on which f is decreasing: (0, 1)

(b) Local minimum: At x = 1, f(x) has a local minimum value of -1.

There is no local maximum value.

(c) Inflection point: At x ≈ 0.293, f(x) has an inflection point.

The function f(x) = x^2 - x - ln(x) is a quadratic function combined with a logarithmic function.

To find the interval on which f is increasing, we need to determine where the derivative of f(x) is positive. Taking the derivative of f(x), we get f'(x) = 2x - 1 - 1/x. Setting f'(x) > 0, we solve the inequality 2x - 1 - 1/x > 0. Simplifying it further, we obtain x > 1. Therefore, the interval on which f is increasing is (0, ∞).

To find the interval on which f is decreasing, we need to determine where the derivative of f(x) is negative. Solving the inequality 2x - 1 - 1/x < 0, we get 0 < x < 1. Thus, the interval on which f is decreasing is (0, 1).

The local minimum is found by locating the critical point where f'(x) changes from negative to positive. In this case, it occurs at x = 1. Evaluating f(1), we find that the local minimum value is -1.

There is no local maximum in this function since the derivative does not change from positive to negative.

The inflection point is the point where the concavity of the function changes. To find it, we need to determine where the second derivative of f(x) changes sign. Taking the second derivative, we get f''(x) = 2 + 1/x^2. Setting f''(x) = 0, we find x = 0. Taking the sign of f''(x) for values less than and greater than x = 0, we observe that the concavity changes at x ≈ 0.293. Therefore, this is the inflection point of the function.

Visit here to learn more about Inflection point:

brainly.com/question/30763521

#SPJ11

To graph the function f(x) = (x)sin(x) in MATLAB using the fplot command, you can follow the steps below:

matlab

Define the function

f = (x) (x.)sin(x);

Set the range of x values

x = linspace(0, 2.5, 100);

Plot the function

fplot(f, [0, 2.5])

Add labels and title

xlabel(x)

ylabel(f(x))

title(Graph of f(x) = (x)sin(x))

Display the grid

grid on

In this code, we first define the function f(x) = (x)sin(x) using an anonymous function (x). Next, we create a range of x values using linspace from 0 to 2.5 with 100 points. Then, we use the fplot command to plot the function f over the specified range. Finally, we add labels, title, and grid to the graph.

To know more about matlab graph  click here:  brainly.com/question/30760537

#SPJ11

The probability that Sam is late to his final exam is 0.000008, or 0.0008%.

Let A be the event that the first alarm clock works, B be the event that the second alarm clock works, and C be the event that the third alarm clock works. Then, the probability that Sam is late to his final exam is given by:

P(Sam is late) = P(not A) * P(not B) * P(not C)

Since the alarm clocks work independently of each other, the probability that any one of them does not work is 1 - 0.98 = 0.02. Therefore:

P(Sam is late) = 0.02 x 0.02 x 0.02

P(Sam is late) = 0.000008

So, the probability that Sam is late to his final exam is 0.000008, or 0.0008% (rounded to three decimal places). This is a very small probability, indicating that it is highly unlikely that Sam will be late to his final exam if all three alarm clocks are working.

To know more about "Probability" refer here:

https://brainly.com/question/30034780#

#SPJ11

Answer:

Step-by-step explanation:

she need to make $50 more you did not put how much shes making a week if she makes $10  it will be five more weeks if she makes $5 it will be 10 more weeks

Option B correctly describes the relationship between m and k, and it is the answer - The relationship is not proportional because the ratio of m to k is not constant.

What is proportion?

In general, the term "proportion" refers to a part, share, or amount that is compared to a whole. According to the definition of proportion, two ratios are in proportion when they are equal.

To determine the relationship between m (speed in miles per hour) and k (speed in kilometers per hour), we can use the given data to create a conversion factor between miles and kilometers -

1 mile = 1.60934 kilometers

We can use this conversion factor to convert the speeds given in miles per hour to kilometers per hour.

The table below shows the converted speeds -

RECORDED SPEEDS

Speed(miles per hour) Speed(kilometers per hour)

11.0                                 17.699

26.0                               41.834

34.0                               54.706

We can see that the ratio of m (speed in miles per hour) to k (speed in kilometers per hour) is not constant.

For example, at the first measurement, m/k = 11/17.699, while at the third measurement, m/k = 34/54.706.

Therefore, we can conclude that the relationship between m and k is not proportional.

To learn more about proportion from the given link

https://brainly.com/question/19994681

#SPJ1

We draw the conclusion that the population mean is not higher than $18 and do not reject the null hypothesis.

A hypothesis is a statement that makes sense in light of the available information but hasn't been proved true or wrong. A hypothesis in statistics is a claim that will serve as the foundation for hypothesis testing (also known as a statistical hypothesis). In a scientific setting, a hypothesis is a tested claim regarding the relationship between two or more variables or a hypothesized cause of an observed occurrence.

Given,

The formula for our hypothesis is

H₀ u< 18, which states that the population mean cannot be higher than $18.

H₁ u > 18 denotes that the average income of the population is higher than $18.

They spent an average of $19.31 when dining out, with a standard deviation of $12.11.

Using given values,

= 19.31 -18/12.11÷√50

= 0.764

Now,

n - 1 = 49

P(tₙ₋₁ > Test statistics)

P(t₄₉ > 0.764)

Using t distribution table,

= 0.224

We draw the conclusion that the population mean is not higher than $18 and do not reject the null hypothesis.

To learn more about hypothesis, visit:

https://brainly.com/question/13025783

#SPJ4

A set of reflections that would carry hexagon ABCDEF onto itself would be "x-axis, y=x, x-axis" or "y=x, x-axis, y-axis".

What is a combination of reflections?

Combination of Two Reflections. A point or object once reflected can further be reflected to form a new image. The axes of these reflections may be parallel to each other or they intersect each other at a point.

Given the coordinates of hexagon ABCDEF, it can be determined that a set of reflections that would carry the hexagon onto itself would be a combination of reflections over the x-axis and y-axis.

One possibility would be to reflect over the x-axis, then reflect over the y=x line, and finally reflect over the x-axis again.

This would take the hexagon from its original position to itself.

Another possibility would be to reflect over the y = x line, then reflect over the x-axis, and finally reflect over the y-axis.

This would also take the hexagon from its original position to itself.

Hence, a set of reflections that would carry hexagon ABCDEF onto itself would be "x-axis, y=x, x-axis" or "y=x, x-axis, y-axis".

To learn more about the combination of reflections visit,

https://brainly.com/question/28004023

#SPJ4

Answer:

About 4 miles

Step-by-step explanation:

The similar Triangle OPN and triangle LMN are similar have the ratio LM / MN = OP / NP

Two figures are said to be similar if they have the same shape and the ratio of their corresponding sides are in the same proportion.

Triangle OPN and triangle LMN are similar, hence:

LM / MN = OP / NP

The similar Triangle OPN and triangle LMN are similar have the ratio LM / MN = OP / NP

Find out more on similar figures at: https://brainly.com/question/2644832

Bill's hourly wages can be calculated by determining the total earnings for each type of work (regular, time and a half, and double time) and then dividing the total earnings by the total number of hours worked. By multiplying the hours worked for each type of work by the corresponding pay rate, the total earnings can be calculated. Finally, dividing the total earnings by the total number of hours worked gives us Bill's hourly wage.

To calculate Bill's hourly wages, we need to determine the total earnings for each type of work he performed. Bill worked 40 hours at his regular rate, so his earnings for regular work are 40 times his regular hourly rate. Bill also worked 2 hours at time and a half, so his earnings for time and a half work are 2 times his regular hourly rate multiplied by 1.5. Similarly, Bill worked 3 hours at double time, so his earnings for double time work are 3 times his regular hourly rate multiplied by 2. After calculating the earnings for each type of work, we sum them up to find the total earnings. This total earnings value is then divided by the total number of hours Bill worked (40 + 2 + 3 = 45 hours) to obtain his hourly wage. The calculation can be summarized as:

Total earnings = (40 * regular rate) + (2 * regular rate * 1.5) + (3 * regular rate * 2)

Hourly wage = Total earnings / Total hours worked

By performing the calculations, you will find Bill's hourly wages based on the number of hours worked and the corresponding pay rates for regular, time and a half, and double time work.

Learn more about wages here:

https://brainly.com/question/31623813

#SPJ11

Step-by-step explanation:

the answer is correct l

Answer:

Step-by-step explanation:

Life in the mid-1800s was marked by widespread prejudice and discrimination against minority groups, including immigrants and African Americans. The period was also characterized by a series of famines that led to significant suffering and mortality. Nativist movements gained popularity, promoting the interests of those born in the United States over those of immigrants. At the same time, millions of emigrants left their homes in search of better opportunities in America, despite the obstacles they faced upon arrival.

Answer:

(if you would like a short one/ still need help)

Nativists we’re prejudice and discriminatory towards Irish emigrants who had come to the United States after the events of the Irish Potato Famine

hope this helps :)

Answer:

11,000

Step-by-step explanation:

Average or Mean= sum of goods/ total number of goods

Average= 6,000+12,000+20,000+8,000+9,000/5

= 55,000/5

= 11,000

Answer:

0 and 2

Step-by-step explanation:

Answer: 18°

Step-by-step explanation:

Let's remember that all triangles must add up to 180°

So let's take our two given angles and add them

119°+43°=162°

Now take 180° and subtract it from 162°

180°-162°=18°

The recommended rule to sequence the jobs for minimum flow time is the EDD (Earliest Due Date) rule.

The EDD rule prioritizes jobs based on their due dates, where jobs with earlier due dates are given higher priority. By sequencing the jobs in order of their due dates, the goal is to minimize the total flow time, which is the sum of the time it takes to complete each job.

In this case, applying the EDD rule, the sequence of jobs would be as follows:

D (Due on Friday 10th June)

F (Due on Tuesday 14th June)

E (Due on Wednesday 15th June)

C (Due on Friday 17th June)

G (Due on Thursday 16th June)

H (Due on Saturday 18th June)

A (Due on Monday 13th June)

B (Due on Monday 20th June)

By following the EDD rule, we aim to complete the jobs with earlier due dates first, minimizing the flow time and ensuring timely delivery of the orders.

Therefore, the recommended rule for sequencing the jobs in this scenario is the EDD (Earliest Due Date) rule.

Learn more about EDD here: brainly.com/question/30397523

#SPJ11

Step-by-step explanation:

If two lines, segments, or rays intersect at right angles, then they are perpendicular. If two angles are complementary, then their measures add up to 90 degrees. If two angles' measures add up to 90 degrees, then they are complementary. If two angles are supplementary, then their measures add up to 180 degrees.

Answer:

i hope it helps

Step-by-step explanation:

0.000074

Explanation:

7.4

×

10

−

5

To write in standard notation, move the decimal point on

7.4

over as many times as the power of ten given.

Move to the left if the given power has a negative exponent

Move to the right if the given power has a positive exponent

Therefore:

7.4

×

10

−

5

=

0.000074

Answer:

the answer is 17/12 all u have to do is change it into a mix fraction

Answer:

\( \boxed{ \bold{ \huge{ \boxed{ \sf{ \frac{17}{12}}}}}} \)

Step-by-step explanation:

\( \sf{ \frac{7}{12} + \frac{5}{6} }\)

Take the L.C.M of 12 and 6

To find L.C.M , first of all find the prime factors of each numbers.

12 = 2 × 2 × 3

6 = 2 × 3

Take out the common prime factors i.e 2 and 3

Also take out the other remaining prime factors : 2

Multiply those all prime factors and obtain L.C.M

L.C.M = Common factors × Remaining factors

= 2 × 3 × 2

= 12

\( \dashrightarrow{ \sf{ \frac{7 \times 1 + 5 \times 2}{12}}} \)

\( \dashrightarrow{ \sf{ \frac{7 + 10}{12}}} \)

\( \dashrightarrow{ \sf{ \frac{17}{12}}} \)

Hope I helped!

Best regards! :D