Describe the similarities and differences between the nonparametric test for two unpaired samples and the unpaired t test.
Answer to relevant Questionsa. What is a parametric statistical method? b. Name some parametric methods you have used. a. What assumption must be met for the sign test to be valid? b. What assumption is not required for the sign test but would be required for a t test to be valid? The number of items returned for each of the past 9 days was 13, 8, 36, 18, 6, 4, 39, 47, and 21. Test to see if the median number returned is significantly different from 40 and find the p-value (as either p > 0.05, p < ...Your human resources department has referred 26 employees for alcohol counseling. While the work habits of 15 improved, 4 actually got worse, and the remaining 7 were unchanged. Use the sign test for the differences to tell ...a. For the chi-squared test for equality of percentages, what do you conclude if the chi-squared statistic is larger than the value in the chi-squared table? b. What do you conclude if the chi-squared statistic is smaller ...
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