# Question: Construct a 90 confidence interval to estimate the population mean

Construct a 90% confidence interval to estimate the population mean using the following data:

= 75 σ = 20 n = 36

= 75 σ = 20 n = 36

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

The average selling price of BlackBerry smartphones purchased by a random sample of 35 customers was $ 311. Assume the population standard deviation was $ 35. a. Construct a 90% confidence interval to estimate the average ...Golf cart attendants at a local country club often receive tips from golfers they assist with their golf clubs. To help recruit new employees, the country club would like to determine the average tips per day an attendant ...Determine the margin of error for a confidence interval to estimate the population mean with n = 20 and σ = 16 for the following confidence levels: a. 80% b. 90% c. 99% Construct a 90% confidence interval to estimate the population proportion with a sample proportion equal to 0.36 and a sample size equal to 125. According to the Centers for Disease Control and Prevention, 20.6% of the U. S. population smoked in 2008. In 2014, a random sample of 650 Americans was selected; 108 of whom smoked. a. Construct a 90% confidence interval ...Post your question