4. A high school teacher hypothesized that in her class, boys were taller than girls. If the probability value of her null hypothesis is 0.34, it means: a. We failed to reject the null hypothesis b. Boys were significantly taller than girls c. Girls were significantly taller than boys d. Her null hypothesis was rejected
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Which of the following represents the appropriate null and alternative hypothesis? "The mean height of women is greater than 64." Ho: u = 64 H1: u > 64 Ho: u = 64 Ho: u != 64 H1: u = 64 Ho: u = 64 Ho: u > 64 Ho: u != 64
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A researcher conducts a hypothesis test on a population proportion. Her null and alternative hypothesis are H0: p = 0.6 and Ha: p < 0.6. The test statistic and p-value for the test are z = -1.51 and p-value = 0.0655. For a significance level of α = 0.05, choose the correct conclusion regarding the null hypothesis. A) There is insufficient evidence to reject the null hypothesis that the population proportion is equal to 0.6. B) There is sufficient evidence to conclude that the population proportion is significantly different from 0.6. C) None of these. D) There is sufficient evidence to accept the null hypothesis that the population proportion is equal to 0.6.
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