A microwave manufacturer has collected the data shown below on number of units sold (y) in the thousands of dollars and the number of ads (x) placed during the month. Calculate the preliminary sums of squares and cross-products.
S_xx = ______________
S_yy = ______________
S_xy = ______________
Calculate:
SSE = ______________
MSE = ______________
Determine the least-squares regression line. = ______________
Compute a point estimate of number of units sold if there are 140 ads.
______________
Compute the standard error of the point estimate of number of units sold if there are 140 ads.
______________
Compute a 95% confidence interval for the average number of units sold in all months with 140 ads.
______________ Enter (n1, n2)
Compute a 95% prediction interval for sales during the next month that happens to be associated with 140 ads.
______________ Enter (n1, n2)

Question

A microwave manufacturer has collected the data shown below on number of units sold (y) in the thousands of dollars and the number of ads (x) placed during the month.

Calculate the preliminary sums of squares and cross-products.
S_xx = ______________
S_yy = ______________
S_xy = ______________
Calculate:
SSE = ______________
MSE = ______________
Determine the least-squares regression line.

= ______________
Compute a point estimate of number of units sold if there are 140 ads.
______________
Compute the standard error of the point estimate of number of units sold if there are 140 ads.
______________
Compute a 95% confidence interval for the average number of units sold in all months with 140 ads.
______________ Enter (n1, n2)
Compute a 95% prediction interval for sales during the next month that happens to be associated with 140 ads.
______________ Enter (n1, n2)

Quizplus · Accepted Answer

The Answer of A microwave manufacturer has collected the data shown below on number of units sold (y) in the thousands of dollars and the number of ads (x) placed during the month. Calculate the preliminary sums of squares and cross-products. S_xx = ______________ S_yy = ______________ S_xy = ______________ Calculate: SSE = ______________ MSE = ______________ Determine the least-squares regression line. = ______________ Compute a point estimate of number of units sold if there are 140 ads. ______________ Compute the standard error of the point estimate of number of units sold if there are 140 ads. ______________ Compute a 95% confidence interval for the average number of units sold in all months with 140 ads. ______________ Enter (n1, n2) Compute a 95% prediction interval for sales during the next month that happens to be associated with 140 ads. ______________ Enter (n1, n2)

A Microwave Manufacturer Has Collected the Data Shown Below on Number