# Question

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 = 50

b. Compare your answer in part (a) to that produced in part (c) of Exercise 10.12. Why is the confidence interval estimate based on the sample median wider than that based on the sample mean?

Sample median = 500, σ = 12, and n = 50

b. Compare your answer in part (a) to that produced in part (c) of Exercise 10.12. Why is the confidence interval estimate based on the sample median wider than that based on the sample mean?

## Answer to relevant Questions

a. Determine the sample size required to estimate a population mean to within 10 units given that the population standard deviation is 50. A confidence level of 90% is judged to be appropriate.b. Repeat part (a) changing the ...H0: µ = 15H1: µ < 15σ = 2, n = 25, x̄ = 14.3, α = .10Calculate the value of the test statistic, set up the rejection region, determine the p-value, interpret the result, and draw the sampling distribution.Find the probability of a Type II error for the following test of hypothesis, given that µ = 1,050.H0: µ = 1,000H1: µ > 1,000α = .01, σ = 50, n = 25For Exercises 11.55 and 11.56, draw the sampling distributions similar to Figure 11.9.a. Test these hypotheses by calculating the p-value given that x̄ = 99, n = 100, and σ = 8H0: μ = 100H1: μ ≠ 100b. Repeat part (a) with n = 50.c. Repeat part (a) with n = 20.d. What is the effect on the value of the ...Post your question

0