# Hypothesis testing : T test

Please help with the following problems. Provide step by step calculations.

A new weight watching company, FatZilla, advertises that those who join their program average at least a 10 pound weight loss during the first two weeks, with a standard deviation of 2.8 pounds. A random sample of 49 people who joined the program finds an average loss of 10.7 pounds.

a) What is the null hypothesis to be tested?

b) What are the values of the test statistic and of p?

https://brainmass.com/statistics/students-t-test/hypothesis-testing-conducting-ttest-420902

#### Solution Preview

Please see the attached file for the solution.

Help on Prob and Stats Question:

A new weight watching company, FatZilla, advertises that those who join their program average at least a 10 pound weight loss during the first two weeks, with a standard deviation of 2.8 pounds. A random ...

#### Solution Summary

This solution provides a step by step method for computing a test statistic given average, standard deviation and sample size. It includes an explanation of the null hypothesis to be tested and the values of the test statistic. Step-by-step calculations are given.