Test the claim about the population mean ? at the level of significance ?. Assume the population is normally distributed. Claim: ? ? 1476; ? = 0.03; ? = 30. Sample statistics: x? = 1468, n = 27 Identify the null and alternative hypotheses. Choose the correct answer. A. H0: ? > 1476 Ha: ? ? 1476 B. H0: ? < 1468 Ha: ? ? 1468 C. H0: ? ? 1476 Ha: ? < 1476 D. H0: ? ? 1468 Ha: ? < 1468
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It is the hypothesis that the researcher is trying to disprove. In this case, the null hypothesis is the claim that the population mean is greater than or equal to 1476. Show more…
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Use Table 5 in Appendix $B$ to find the critical value(s) for the alternative hypothesis, level of significance $\alpha,$ and sample sizes $n_{1}$ and $n_{2}$. Assume that the samples are random and independent, the populations are normally distributed, and that the population variances are (a) equal and (b) not equal. $$H_{a}: \mu_{1}<\mu_{2}, \alpha=0.10, n_{1}=30, n_{2}=32$$
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