Business statistics Value of t and confidence interval
The U.S. Dairy Industry wants to estimate the mean yearly milk consumption. A sample of 13 people reveals the mean yearly consumption to be 58 gallons with a standard deviation of 18 gallons. |
(c) |
For a 90 percent confidence interval, what is the value of t? (Round your answer to 3 decimal places.) Value of t is what _______________ |
(d) |
Develop the 90 percent confidence interval for the population mean. (Round your answers to 3 decimal places.) Confidence interval for the population mean is _______and ________. Need both percents for this |