[2] A random sample of 69 health insurance firms, 47 did public relations in-house, as did 40 of an independent random sample of 69 casualty insurance firms. Conduct a hypothesis test of equality of the population proportions against a two-sided alternative. Use JMP to conduct the appropriate hypothesis test. Use a 5% significance level.

[2.1] State Assumptions:

[2.2] State the Null and Alternative Hypothesis statements

Conduct hypothesis test using a 5% level of significance:

Test Statistic

Phealth - Pcasualty Z= where, Po(1 - Po) _ Po(1 - Po) Xhealth + Xcasualty nhealth ncasualty po = nhealth + ncasualty