To test the null hypothesis at 5% level of significance that the mean of a population is at least 16, a random sample of size 100 is taken. This sample has a mean of 15.8 and a standard deviation of 0.9. We are willing to assume that the probability distribution of the population variable is approximately normal. There is: a. enough evidence to reject the null hypothesis. b. not enough evidence to reject the null hypothesis. c. sufficient evidence to reject the alternative hypothesis. d. insufficient evidence to either accept or reject the null hypothesis. e. insufficient information to make a decision.
Added by Andrew G.
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Step 1: State the null and alternative hypotheses: - Null hypothesis (H0): μ ≥ 16 - Alternative hypothesis (H1): μ < 16 Show more…
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