Find the p-value of the test of H0: β1 = 0 for Exercise 11.14.Exercise 11.14Refer to the d...

Find the p-value of the test of H0: β1 = 0 for Exercise 11.14.

Exercise 11.14

Refer to the data of Exercise 11.6.

a. Calculate a 90% confidence interval for β1.

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b. What is the interpretation of H0: β1 = 0 in Exercise 11.6?

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c. What is the natural research hypothesis Ha for that problem?

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d. Do the data support Ha at α = .05? Clearly state your assumptions.

Exercise 11.6

A mail-order retailer spends considerable effort in picking orders-selecting the ordered items and assembling them for shipment. A small study took a sample of 100 orders. An experienced picker carried out the entire process. The time in minutes needed was recorded for each order. A scatterplot and spline fit, created using JMP, are shown. What sort of transformation is suggested by the plot?