# Statistics Questions

May 21st, 2016
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One-tailed, two-tailed tests, hypothesis testing 4) The percentage of people who exercise in California 1) Music vs no music Training v No Training 8) Researchers at a food company are interested in how a new spaghetti sauce made from green tomatoes (and green in color) will compare to their traditional red spaghetti sauce. 1) You notice in your introductory psychology class that women tend to sit up front, and more men sit in the back.

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2a)1) One-tailed test2) H0: = 1.73Ha: < 1.733) = /=1.51.731.12/60= 1.594) zcv = -1.645 for a left-tailed test of a mean with alpha= 0.054a) Type II error6a)1) Two-tailed test2) H0: = 58Ha: 583) Tobt = 0.984) tcrit = 2.1455) The decision rule is to reject the null hypothesis is the calculated t-value is > t-crit. In ourcase, tobt(0.98) = 0.05. Therefore, we do notreject the null hypothesis. The mean scores for the two groups are different.5) The effect size is r2, calculated by the followi

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