# Question: True or False You should consider using a confidence interval

(True or False) You should consider using a confidence interval whenever

(a) The null hypothesis has been rejected

(b) The issue is whether or not an effect is present

(c) The issue involves possible effect sizes

(d) There is no meaningful null hypothesis

(a) The null hypothesis has been rejected

(b) The issue is whether or not an effect is present

(c) The issue involves possible effect sizes

(d) There is no meaningful null hypothesis

## Answer to relevant Questions

In Review Question, instead of testing a hypothesis, you might prefer to construct a confidence interval for the mean weight of all 2-pound boxes of candy during a recent production shift. (a) Given a population standard ...In the gas mileage test described in this chapter, would you prefer a smaller or a larger sample size if you were (a) The car manufacturer? Why? (b) A vigorous prosecutor for the federal regulatory agency? Why? A random sample of 38 statistics students from a large statistics class reveals an r of 2 .24 between their test scores on a statistics exam and the time they spent taking the exam. Test the null hypothesis with t, using the ...Recall the experiment described in Review Question 16.11 on page 314, where errors on a driving simulator were obtained for subjects whose orange juice had been laced with controlled amounts of vodka. Now assume that ...Test the null hypothesis at the .01 level of significance that the distribution of blood types for college students complies with the proportions described in the blood bank bulletin, namely, .44 for 0, .41 for A, .10 for B, ...Post your question