etext problems week 4

# etext problems week 4 - 1 Individual Assignment...

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15.18 0–9 12 8 3 23 10–59 8 4 10 22 60 or more 1 7 11 19 Col Total 21 19 24 64 Ho: certainty and credits earned are independent Ha: centainty and credits earned are dependent p-value of 0.92 Do not reject Ho; degree of certainty is independent 15.22 Ho: vehicle type is independent of mall location Ho; vehicle type is dependent on mall location I get a p-value of 0.00000121 Reject Ha 15.24 Ho: noise level independent of flight phase Ha: noise level dependent on flight phase p-value = 0.61 Do not reject ho. 15.28 Chi-Sq Test: The p- value for chi square = 0.63 and dof = (2 – 1)(2 – 1) = 1 is 0.427 1. Individual Assignment: E-Text (Please complete and submit problems in Microsoft Excel. · Resource: Ch. 15 of Applied Statistics in Business and Economics · Prepare answers to the following assignments: o Chapter Exercises 15.18 o Chapter Exercises 15.22 o Chapter Exercises 15.24 o Chapter Exercises 15.28

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Since 0.427 > 0.05, we fail to reject the null hypothesis. There is no statistical evidence to suggest that th Two-tail z- Test: H0: There is no difference between the abilities to identify the colas; that is, the correctness of prediction

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