Use the 6 steps of hypothesis testing to conduct a T test As a quality control manager for an insurance company, you believe a certain group of physicians is over referring for an expensive procedure. The average number of referrals for the total number of physicians you insure is 140 per year. The sample of 62 physicians’ average referral is 158 per year with a standard deviation of 1.3. Are the sample physicians significantly over referring?

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A: We have:-i = 1,2nFewer than 10 Headers33108910 or more Headers27997

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Q: please give me answer step by step

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.