1 In a hypothesis test, the test statistic computed from the sample data is considered extreme
highly unlikely to occur due to chance
2 A test of the hypotheses, H0: p = 0.18 and H1: p ≠ 0.18 is a _
two-tailed test
3 An analyst tested the null hypothesis µ ≥ 30 against the alternative hypothesis that µ < 30. T
a > 0.07
4 The dean of a business school claims that the average starting salary of its graduates is mor
H0: μ = 85 and Ha: μ > 85
5 The dean of a business school claims that the average starting salary of its graduates is mor
1.65
6 If the calculated test statistic falls in the rejection region, the statistical action is to
reject the null hypothesis
7 A researcher is testing a hypothesis of a single mean. The critical z value for = .05 and a two
reject
8 Use the information given and the eight-step approach to test the hypotheses. Let α = .01.
3.21 reject the null hypothesis
9 According to one survey taken a few years ago, 32% of American households have attempte
-1.22 Fail to reject the null hypothesis
10 A computer manufacturer estimates that its line of minicomputers has, on average, 8.6 days
-5.62 reject the null hypothesis
11 The weight of a USB flash drive is 30 grams and is normally distributed. Periodically, quality
reject the null hypothesis and shut down the process
12 The executives of CareFree Insurance, Inc. feel that "a majority of our employees perceive a
Fail to reject the null hypothesis
13 Elwin Osbourne, CIO at GFS, Inc., suspects that at least 25% of e-mail messages sent by GFS
Fail to reject the null hypothesis
14 The customer help center in your company receives calls from customers who need help wit
1.69
