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Five step procedure for students t test.

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Attached is a 5 step hypothesis test. I have tried to work through this and am stuck on step 4 and 5. I am not 100% sure I am using the correct test statistic and am totally lost on step 4. This test is being done on only one sample. The sample is below:

2.05
2.06
2.07
2.07
2.08
2.11
2.14
2.15
2.16
2.17
2.18
2.19
2.19
2.19
2.19
2.21
2.23
2.25
2.28
2.34
2.35
2.35
2.37
2.39
2.46

There are 25 samples, with a mean of 2.209 and a std dev. .111854 and std error of the mean .089493102.

See attached file for full problem description.

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The solution gives the details of five step procedure for students t test. Null Hypothesis, alternative hypothesis, significance level, test statistic, critical Value and P value are given with interpretations.

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