Question

Try another similar question reattempt last question below, or select another question You measure 20 textbooks weights, and find they have a mean weight of 41 ounces. Assume the population standard deviation is 7.6 ounces. Based on this construct a 90% confidence interval for the true population mean textbook weight Give your answers as decimals, to two places Box 1: Enter your answer as an integer or decimal number. Examples: 3,-4, 5.5172 Enter DNE for Does Not Exist, oo for Infinity Box 2: Enter your answer as an integer or decimal number. Examples: 3.-4.5.5172 Enter DNE for Does Not Exist, oo for Infinity Points possible: 2 This is attempt 2 of 3 Score on last attempt 10,0) Score in gradebook (0,0). Out of: (1.1) Post this question to forum Submit When you are done, click here to se summary of your scores im you G

Answer 1

The statistic software output for this problem is:

One sample Z summary confidence interval: p: Mean of population Standard deviation = 7.6 90% confidence interval results: U. Limit Mean n Sample Mean Std. Err. L. Limit 20 41 1.6994117 38.204717 43.795283

38.20 < $\mu$ < 43.80