# Calculating Confidence Interval Estimate for True Mean

Not what you're looking for? Search our solutions OR ask your own Custom question.

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).

https://brainmass.com/statistics/confidence-interval/calculating-confidence-interval-estimate-true-mean-229884

#### Solution Preview

Solution:

sample size=n=15

sample mean=10

sample std deviation=0.15

We assume that population is normal or approximately normal

Sample size is less than 30 and population standard ...

#### Solution Summary

This solution describes the steps for determining confidence interval estimate for true mean weight of bags.

$2.49