In each of the following situations, explain what is wrong and why. (a) A resear

Question

In each of the following situations, explain what is wrong and why. (a) A researcher wants to test H_0: x_1 = x_2 versus the two-sided alternative H_a: x_1 notequalto x_2. (b) A study recorded the credit card IQ scores of 100 college freshmen. The scores of the 48 males in the study were compared with the scores of all 100 freshmen using the two-sample methods of this section. (c) A two-sample t statistic gave a P-value of 0.97. From this, we can reject the null hypothesis with 95% confidence. (d) A researcher is interested in testing the one-sided alternative H_a: mu_1

Explanation / Answer

(a) True              Alternative hypothesis: H1 = x1bar not equal to x2bar

(b) Trie

(c) False since P value 0.97 which is > 0.05, so we conclude that we accept H0

(d) True

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