Recall that to construct a confidence interval for the mean when the population standard deviation isunknown, the population must follow the normal probability distribution. To test thiscondition, the following data show a random sample of weekly visits by patients to a chiropractic office. Complete parts a and b below.

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Click the icon to view the weekly patient visit data.

a. Using =0.05, perform achi-square test to determine if the number of patient visits per week follows the normal distribution. Note that x=100.8, and s=16.5.

State the appropriate null and alternative hypotheses. Choose the correct answer below.