# Question

a. Repeat part (b) in Exercise 10.45 after discovering that the population standard deviation is actually 5.

b. Repeat part (b) in Exercise 10.45 after discovering that the population standard deviation is actually 20.

b. Repeat part (b) in Exercise 10.45 after discovering that the population standard deviation is actually 20.

## Answer to relevant Questions

Review Exercises 10.45 and 10.46. Describe what happens to the confidence interval estimate whena. The standard deviation is equal to the value used to determine the sample size.b. The standard deviation is smaller than the ...a. The mean of a random sample of 25 observations from a normal population with a standard deviation of 50 is 200. Estimate the population mean with 95% confidence.b. Repeat part (a) changing the population standard ...a. Given the following information, determine the 90% confidence interval estimate of the population mean using the sample median.Sample median = 500, σ = 12, and n = 50b. Compare your answer in part (a) to that produced in ...H0: µ = 70H1: µ > 70σ = 20, n = 100, x̄ = 80, α = .01Calculate the value of the test statistic, set up the rejection region, determine the p-value, interpret the result, and draw the sampling distribution.a. Calculate the probability of a Type II error for the following hypotheses when µ = 37:H0: µ = 40H1: µ < 40The significance level is 5%, the population standard deviation is 5, and the sample size is 25.b. Repeat part ...Post your question

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