# Question: The following table lists the midterm and final exam scores

The following table lists the midterm and final exam scores for seven students in a statistics class.

a. Do you expect the midterm and final exam scores to be positively or negatively related?

b. Plot a scatter diagram. By looking at the scatter diagram, do you expect the correlation coefficient between these two variables to be close to zero, 1, or 1?

c. Find the correlation coefficient. Is the value of r consistent with what you expected in parts a and b?

d. Using a 1% significance level, test whether the linear correlation coefficient is positive.

a. Do you expect the midterm and final exam scores to be positively or negatively related?

b. Plot a scatter diagram. By looking at the scatter diagram, do you expect the correlation coefficient between these two variables to be close to zero, 1, or 1?

c. Find the correlation coefficient. Is the value of r consistent with what you expected in parts a and b?

d. Using a 1% significance level, test whether the linear correlation coefficient is positive.

## Answer to relevant Questions

The following data give the ages (in years) of husbands and wives for six couples. a. Do you expect the ages of husbands and wives to be positively or negatively related? b. Plot a scatter diagram. By looking at the scatter ...The owner of a small factory that produces working gloves is concerned about the high cost of air conditioning in the summer but is afraid that keeping the temperature in the factory too high will lower productivity. During ...Construct a 99% confidence interval for the mean value of y and a 99% prediction interval for the predicted value of y for the following. a. ŷ = 3.25 + .80x for x = 15 given se = .954, = 18.52, SSxx = 144.65, and n = 10 b. ...Refer to Exercise 13.85. Construct a 98% confidence interval for the mean starting salary of recent college graduates with a GPA of 3.15. Construct a 98% prediction interval for the starting salary of a randomly selected ...The following table gives the temperatures (in degrees Fahrenheit) at 6 PM and the attendance (rounded to hundreds) at a minor league baseball team’s night games on 7 randomly selected evenings in May. a. Do you think ...Post your question