SOLUTION: You measure 41 textbooks' weights, and find they have a mean weight of 49 ounces. Assume the population standard deviation is 12.6 ounces. Based on this, construct a 95% confidence

Algebra ->  Equations -> SOLUTION: You measure 41 textbooks' weights, and find they have a mean weight of 49 ounces. Assume the population standard deviation is 12.6 ounces. Based on this, construct a 95% confidence      Log On


   

Question 1184695: You measure 41 textbooks' weights, and find they have a mean weight of 49 ounces. Assume the population standard deviation is 12.6 ounces. Based on this, construct a 95% confidence interval for the true population mean textbook weight.
Give your answers as decimals, to two places
I am 95% confident that the mean weight of textbooks is between____
and ______ ounces.


Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!

49+%2B-+z%5B0.975%5D%2A%2812.6%2Fsqrt%2841%29%29+=+49+%2B-+1.96%2A%2812.6%2Fsqrt%2841%29%29+

You can do the rest.