May 26, 2015

Homework Help: statistics

Posted by Crystal on Friday, December 27, 2013 at 2:22pm.

I really need help with my statistical analysis... i cant understand it. Here are the questions

A sample group was surveyed to determine which of two brands of soap was preferred. H0 :p = 0.50; H1: p is not equal to 0.50. Thirty-eight of 60 people indicated a preference. At the .05 level of significance, we can conclude that:

The performance of students on a test resulted in a mean score of 25. A new test is instituted and the instructor believes the mean score is now lower. A random sample of 64 students resulted in 40 scores below 25. At a significance level of α = .05:

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