SOLUTION: A snack food manufacturer selected a sample of 15 bags of pretzels off the assembly line and weighed their contents. If the sample mean is 10.0 and the sample standard deviation is

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Question 629242: A snack food manufacturer selected a sample of 15 bags of pretzels off the assembly line and weighed their contents. If the sample mean is 10.0 and the sample standard deviation is 0.15, find the 95% confidence interval estimate for the true mean weight of bags of this type of pretzel.
A. (9.92, 12.34)

B. (8.54, 11.46)

C. (10.42, 10.58)

D. (9.92, 10.08)

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi

15 bags of pretzels off the assembly line and weighed their contents. 

If the sample mean is 10.0 and the sample standard deviation is 0.15

find the 95% confidence interval estimate for the true mean weight of bags 

ME = +2.14%28.15%2Fsqrt%2815%29%29 = .08

10 - .08 < mu < 10 + .08

9.92 < mu < 10.08



t - test table

DF	Probability, p	

	0.1	0.05	0.01	0.001		

14	1.76	highlight%282.14%29	2.98	4.14