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Instructions for calculating the sample mean and standard deviation of a set of lot scores for american statistics students, as well as conducting a one-sample t-test to determine if the data comes from a population with a mean of 20. The problem also instructs the reader to compare the results obtained using spss.
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STA 100 SPSS Extra Credit Problem Due at Final Prof. Thistleton
Suppose you have the following data on LOT scores for American statistics students chosen at random:
20 14 16 9 21 15 19
Calculate a sample mean, x, and a sample standard deviation, s. Conduct a simple t-test to determine whether you believe these data points come from a population whose mean is μ = 20. Use a two sided alternative and level of significance α = 0.05. Report your p-value.
Now perform the same computation using SPSS. Enter these data and name the variable associated with these data LOT SCORE. Now test the hypothesis by selecting Analyze → Compare Means → One Sample T Test. Move LOT SCORE into the test variable field and enter a test value of