Cameron wondered if the average score on a final exam was different between those who texted on a regular basis during the lectures for a particular class and those that did not text at all during the lectures. Which of the following statements is correct?
A. A one-tailed test should be performed since the alternative hypothesis states that the parameter is not equal to the hypothesized value.
B. A one-tailed test should be performed since the alternative hypothesis states that the parameter is less than the hypothesized value.
C. A two-tailed test should be performed since the alternative hypothesis states that the parameter is not equal to the hypothesized value.
D. A two-tailed test should be performed since the alternative hypothesis states that the parameter is less than the hypothesized value.
E. A two-tailed test should be performed since the null hypothesis states that the parameter is not equal to the hypothesized value.
C. A two-tailed test should be performed since the alternative hypothesis states that the parameter is not equal to the hypothesized value.
Note here our aim to test the claim that the average score on a final exam was different between those who texted on a regular basis during the lectures for a particular class and those that did not text at all during the lectures, so so the difference can be in both side( either negative or positive) so we take two tailed test.
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