# Question: A simple random sample of size n 40 is

A simple random sample of size n = 40 is drawn from a population. The sample mean is found to be x̄ = 120.5, and the sample standard deviation is found to be s = 12.9. Construct a 99% conﬁdence interval for the population mean. Construct the appropriate conﬁdence interval.

**View Solution:**## Answer to relevant Questions

A simple random sample of size n = 210 is drawn from a population. The sample mean is found to be x̄ = 20.1, and the sample standard deviation is found to be s = 3.2. Construct a 90% conﬁdence interval for the population ...In a survey of 1008 adult Americans the Gallup organization asked, “When you retire, do you think you will have enough money to live comfortably or not?” Of the 1008 surveyed, 526 stated that they were worried about ...To test H0: µ = 100 versus H1: µ > 100, a simple random sample of size n = 35 is obtained from an unknown distribution. The sample mean is 104.3 and the sample standard deviation is 12.4. (a) To use the t-distribution, why ...The U.S. Golf Association requires that golf balls have a diameter that is 1.68 inches. To determine if Maxfli XS golf balls conform to USGA standards, a random sample of Maxfli XS golf balls was selected. Their diameters ...Perhaps you have been asked this question: “Did you get your 8 hours of sleep last night?” In a recent survey of 151 postpartum women, the folks at the National Sleep Foundation found that the mean sleep time was 7.8 ...Post your question