According to a study done in 2010, the mean number of sexual partners was 7.6. However,...
According to a study done in 2010, the mean number of sexual partners was 7.6. However, a psychologist feels that the mean number of sexual partners has decreased since then. To test this, the psychologist asks a sample of 12 people how many partners they have had, the results are given below. Test the psychologist’s claim that the mean number of sexual partners has decreased since the 2010 study. Use the level of significance. The data is normal with no outliers. Use the α=0.05 level of significance.
15 7 3 7 6 9 10 9 12 13 14 11
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According to a study done in 2010, the mean number of sexual
partners was 7.6. However,...
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3. Test the claim that a population mean exceeds 40. You have a sample of 40...
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3. Test the claim that a population mean exceeds 40. You have a sample of 40 items for which the sample mean x 42 and sample standard deviation s- 7. Use significance level α 0.05.
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