For Exercises 7.1 and 7.2, see page 360; for 7.3 and 7.4, see page 362; for 7.5 to 7.7, see page 365; for 7.8 and 7.9, see page 368; for 7.10 and 7.11, see page 371; and for 7.12 and 7.13, see page 372.
7.8 Using software to compute a confidence interval.
CASE 7.1 In Example 7.1 (page 360), we calculated the 95% confidence interval for the average daily time a student at your institution uses his or her smartphone. Use software to compute this interval, and verify that you obtain the same interval.
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