Question: Little League product testing, part 2. Using the same data provided in Exercise 48, answer the following questions. a) Find the 95% prediction interval for

Little League product testing, part 2.

Using the same data provided in Exercise 48, answer the following questions.

a) Find the 95% prediction interval for the effectiveness of the video on a pitcher with an initial ability of 33 strikes.

b) Do you think predictions made by this regression will be very accurate? Explain. Unpaid ($ thousand) 25.000 20.000 15.000 10.000 5.000 0.000 115 165 Unpaid

Regression Statistics Multiple R 0.8243 R Square 0.6795 Adjusted R Square 0.6635 Standard Error 1.9681 Observations 22 Variable Coefficient SE(Coeff) t-ratio P-value Intercept 4.9004 1.7054 2.8735 0.0094 Total Employment 0.0370 0.0057 6.5115 0.0000 Amount and Total Employment Plot 215 265 y= 0.037x+4.9004 R = 0.6795

a) State what you want to know, identify the variables, and give the appropriate hypotheses.

b) Check the assumptions and conditions.

c) If the conditions are met, complete the analysis.

Unpaid ($ thousand) 25.000 20.000 15.000 10.000 5.000 0.000 115 165 Unpaid Amount and Total Employment Plot 215 265 y= 0.037x+4.9004 R = 0.6795 315 365 415 Total Employment (in hundred)

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