A Construct A 90 Confidence Interval For The Population Mean 3 928 08 Round To Two Decimal Places As Needed B As 1 (20.03 KiB) Viewed 58 times
A Construct A 90 Confidence Interval For The Population Mean 3 928 08 Round To Two Decimal Places As Needed B As 2 (32.81 KiB) Viewed 58 times
a. Construct a 90% confidence interval for the population mean (3.928.08) (Round to two decimal places as needed.) b. Assume that sample mean X and sample standard deviations 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 (5.12), 687) (Pound to two decimal placen as needed) What is the effect of the sample size on the width of the confidence interval? As the sample size increases, the width decreasen Xa As the sample size increasen, the width increases As the sample stre increases, the width stays the same
The random sample shown below was selected from a normal distribution. 10, 5, 8, 3, 3,7 Complete parts a and b. a. Construct a 99% confidence interval for the population mean .
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