# One sample t test:Mean

One eight Friday quizzes, Bob received scores of 80, 85,95,92,89,84,90,92. He tells Prof. Hardtack that he is really a 90+ performer but this sample just happened to fall below his true performance level. Using the appropriate statistical test can you say that from this data Bob does not perform at a 90 level? a. State the null alternate hypotheses. b. Show your decision rule using the .01 level of significance. c. Calculate the appropriate test. d. Provide an interpretation of your findings.

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#### Solution Summary

The solution provides step-by-step method for the calculation of test statistic for population mean. Formula for the calculation and Interpretations of the results are also included. Interactive excel sheet is included. The user can edit the inputs and obtain the complete results for a new set of data.