Question: For the hypothesis test described in Exercise 1, which of the following distributions is most appropriate? a. normal distribution b. t distribution c. chi-square distribution

For the hypothesis test described in Exercise 1, which of the following distributions is most appropriate?

a. normal distribution
b. t distribution
c. chi-square distribution
d. uniform distribution

Exercise 1

Assuming that we want to use the data in the table below to test for independence between wearing a helmet and receiving facial injuries in a bicycle accident, find the expected frequency for the cell with an observed frequency of 83. Facial Injuries received All Injurles nonfacial Does wearing a bike helmet prevent

Facial Injuries received All Injurles nonfacial Does wearing a bike helmet prevent facial Injuries? Helmet worn No helmet wom 30 182 83 236

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