Question

B Question Help The random sample shown below was selected from a normal distribution. 9,6,5, 7, 3,6 Complete parts a and b. a. Construct a 95% confidence interval for the population mean u. (Round to two decimal places as needed.) b. Assume that sample mean x and sample standard deviation s remain exactly the same as those you just calculated but that are based on a sample of n=25 observations. Repeat part a. What is the effect of increasing the sample size on the width of the confidence intervals? The confidence interval is (O . (Round to two decimal places as needed.) What is the effect of the sample size on the width of the confidence interval? O A. As the sample size increases, the width decreases. OB. As the sample size increases, the width stays the same. O C. As the sample size increases, the width increases. Click to select your answer(s). PREVIOUS NEXT