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4. (1 pt) A newspaper claims that the mean age of its current readers (population 1)...

4. (1 pt) A newspaper claims that the mean age of its current readers (population 1) has dropped3.6 years over the last 10 years (population 2). A market researcher believes that the newspaper's claim is incorrect and plans to conduct a hypothesis test to provide evidence against the newspaper's claim. State the null and alternative hypothesis for each scenario.

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Answer #1

Solution:

For the given scenario, the null and alternative hypotheses are given as below:

Null hypothesis: H0: The mean age of current readers of newspapers has dropped 3.6 years over the last 10 years.

Alternative hypothesis: Ha: The mean age of current readers of newspapers has dropped other than 3.6 years over the last 10 years.

H0: µ1 - µ2 = 3.6 versus Ha: µ1 - µ2 ≠ 3.6

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