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March 30, 2015

March 30, 2015

Posted by **Steven** on Monday, December 16, 2013 at 9:42pm.

• A new television series must prove that it has more than 25% of the viewing audience after its initial 13-week run in order to be judged successful. Assume that in a sample of 400 households, 112 were watching the series. At a 10% level of significance, can the series be judged successful based on this information? State any assumptions you make. Clearly state the null and alternate hypotheses.

• A bath soap manufacturing process is designed with the expectation that each batch prepared in the mixture department will produce a mean of 120 bars of soap per batch. A mean over or under this standard is undesirable. A sample of ten batches shows the following numbers of bars of soap:

108, 118, 120, 122, 119, 113, 124, 122, 120, 123

Use a 5% level of significance and test to see the null hypothesis H0: =120 should be rejected.

State any assumptions you make. Clearly state the alternate hypotheses.

- Statistics 4 -
**MathGuru**, Tuesday, December 17, 2013 at 7:07pmSee your later post.

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