Question

A random sample of 6 fields of durum wheat has a mean yield of 45.5 bushels per acre and standard deviation of 7.43 bushels per acre. Determine the 80% confidence interval for the true mean yield. Assume the population is approximately normal.

Step 1 of 2: Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.

Step 2 of 2: Construct the 80%80% confidence interval. Round your answer to one decimal place

Answer 1

from above:

Step 1 of 2  critical value that should be used in constructing the confidence interval =1.476

Step 2 of 2: 80% confidence interval =(41.0 , 50.0)