Testing the Difference Between Two Proportions In Exercises 712, (a) identify the claim

Chapter 8, Problem 7

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Testing the Difference Between Two Proportions In Exercises 712, (a) identify the claim and state H0 and Ha, (b) find the critical value(s) and identify the rejection region(s), (c) find the standardized test statistic z, (d) decide whether to reject or fail to reject the null hypothesis, and (e) interpret the decision in the context of the original claim. Assume the samples are random and independent. If convenient, use technology.Plantar Heel Pain In a 4-week study about the effectiveness of usingmagnetic insoles to treat plantar heel pain, 54 subjects wore magneticinsoles and 41 subjects wore nonmagnetic insoles. The results are shown atthe left. At a = 0.01, can you support the claim that there is a differencein the proportion of subjects who feel all or mostly better between the twogroups? (Adapted from The Journal of the American Medical Association)