Independent random samples of 101 college sophomores, 112 college juniors, and 96 college seniors were asked to rate, on a scale of 1 to 7, the importance attached to brand name when purchasing a car. The obtained value of the Kruskal-Wallis statistic was 0.15. a. What null hypothesis can be tested using this information? b. Carry out this test.

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Q: The mean number of sick days an employee takes per year is believed to be about 10. Members of a…

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A: Hypothesis testing

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A: We know that

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A: Let X = the number of sick days they took for the past year Data :  10; 5; 13; 3; 11; 8; 6; 9…