# Question: A simple random sample of size n 210 is

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 mean. Construct the appropriate conﬁdence interval.

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

In a random sample of 40 felons convicted of aggravated assault, it was determined that the mean length of sentencing was 54 months, with a standard deviation of 8 months. Construct and interpret a 95% conﬁdence interval ...In a random sample of 40 visitors to a certain theme park,it was determined that the mean amount of money spent per person at the park (including ticket price) was $93.43 per day with a standard deviation of $15. Construct ...To test H0: µ = 50 versus H1: µ ≠ 50, a simple random sample of size n = 15 is obtained from a population that is normally distributed. The sample mean is 48.1 and the sample standard deviation is 4.1. (a) Why is it ...It is suggested by college mathematics instructors that students spend 2 hours outside class studying for every hour in class. So, for a 4-credit-hour math class, students should spend at least 8 hours (480 minutes) studying ...The outside diameter of a manufactured part must be 1.3825 inches, according to customer speciﬁcations. The data shown represent a random sample of 10 parts. Use a 95% conﬁdence interval to judge whether the part has ...Post your question