Question

In: Statistics and Probability

x 2 8 5 9 4 3 9 6 7 8 y 3 6 5 7...

x 2 8 5 9 4 3 9 6 7 8
y 3 6 5 7 9 7 4 6 9 9

-5.48x + 0.17

5.48x + 0.17

-0.17x + 5.48

0.17x + 5.48

Expert Solution

Correct option:

EXPLANATION:

X Y XY X²

2 3 6 4

8 6 48 64

5 5 25 25

9 7 63 81

4 9 36 16

3 7 21 9

9 4 36 81

6 6 36 36

7 9 63 49

8 9 72 64

------------------------------------------------------------------------

61 65 406 429

So, the Regression Equation is given by:

y = a + bx

Substituting the values, we get:

orchestra answered 2 years ago

Table: x: 6, 2, 15, 9, 12, 5, 8 y: 8, 9, 4, 7, 6, 9,...

Table: x: 6, 2, 15, 9, 12, 5, 8 y: 8, 9, 4, 7, 6, 9, 8 1) Make the scatter diagram. 2) Find the equation of the regression line using the formulas given in class. They must appear the intermediate steps of substitutions. Round the answers to three decimal places. 3) Find the correlation coefficient using the formulas given in class. Steps should appear intermediates of substitutions. Round the answer to three decimal places. 4) Find the value predicted...

ID X Y 1 2 3 2 3 6 3 4 6 4 5 7 5...

ID X Y 1 2 3 2 3 6 3 4 6 4 5 7 5 8 7 6 5 7 7 6 7 8 8 8 9 7 8 10 12 11 Test the significance of the correlation coefficient. Then use math test scores (X) to predict physics test scores (Y). Do the following: Create a scatterplot of X and Y. Write the regression equation and interpret the regression coefficients (i.e., intercept and slope). Predict the physics score for each....

x 3, 4, 5, 7, 8 y 3, 7, 6, 13, 14 (a) Find the estimates...

x 3, 4, 5, 7, 8 y 3, 7, 6, 13, 14 (a) Find the estimates of Bo and B1. Bo=bo= _____ (Round to three decimal places as needed.) B1=b1= ______(Round to four decimal places as needed.) (b) Compute the standard error the point estimate for se= ____ (c) Assuming the residuals are normally distributed, determine Sb1=____ (Round to four decimal places as needed.) (d) Assuming the residuals are normally distributed, test HoB1=0 versus H1:B1/=0 at the a=0.05 level of...

Consider the matrix list x = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]. Write...

Consider the matrix list x = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]. Write a list comprehension to extract the first column of the matrix [1, 4, 7]. Write another list comprehension to create a vector of twice the square of the middle column.

For the following data set, X: 9, 6, 8, 3, 8, 9, 3, 4, 3, 7:...

For the following data set, X: 9, 6, 8, 3, 8, 9, 3, 4, 3, 7: Calculate: 1. Variance 2. Mode 3. Mean 4. Mean Average Deviation (MAD) about the mean 5. Median

3, 7, 8, 5, 6, 4, 9, 10, 7, 8, 6, 5 Using the previous question...

3, 7, 8, 5, 6, 4, 9, 10, 7, 8, 6, 5 Using the previous question 's scores, If three points were added to every score in this distribution, what would be the new mean? If three points were added to every score in this distribution, what would be the new standard deviation. Remember, you have already calculated population standard deviation in a previous problem. This problem requires two answers.

Step 2 Data Set A x 1 2 3 4 5 6 7 y 7 7...

Step 2 Data Set A x 1 2 3 4 5 6 7 y 7 7 7 9 9 9 10 Data Set B x 1 2 3 4 5 6 7 8 9 10 11 y 4 6 6 6 8 9 9 9 10 10 10 Step 2 Find the equation for the least-squares line, and graph the line on the scatter plot. Find the sample correlation coefficient r and the coefficient of determination r2. Is r significant?...

Using the same data… 2 3 4 4 4 6 6 6 7 8 8 9...

Using the same data… 2 3 4 4 4 6 6 6 7 8 8 9 10 10 11 12 16 16 28 46 (d) [5 pts] Determine the 5# summary. (e) Determine the lower and upper fence to determine if there are any outliers. (f) Draw and carefully label a modified boxplot for this data. (g) What is the shape of the distribution (symmetric, skewed left, or skewed right). Explain.

In a deck of 52 playing cards (A, 2, 3, 4, 5, 6, 7, 8, 9,...

In a deck of 52 playing cards (A, 2, 3, 4, 5, 6, 7, 8, 9, 10, J, Q, K in each four suits), What is the probability of selecting a black (i.e., club or spade) king card? Without replacement means the card IS NOT put back into the deck. What is the probability that when two cards are drawn from a deck of cards without replacement that both of them will be 8’s? What is the probability of being...

3 6 4 8 1 10 2 9 11 12 15 22 3 6 7 5...

3 6 4 8 1 10 2 9 11 12 15 22 3 6 7 5 8 1 12 14 Each column represents a different treatment given to sick rats. Each cell is a different rat. Use statistical analysis and use post hoc testing using contrasts to find the best treatment. Treatment 1: vitamins Treatment 2: prescription pills Treatment 3: brain surgery Treatment 4: shock therapy Treatment 5: dietary changes