The Standard Normal Distribution · Example 7
From 19841985, the mean height of 15-to 18-year-old males from Chile was 172.36 cm, and the standard deviation was 6.34 cm. Let Y = the height of 15-to 18-year-old males in 19841985. Then Y ~ N(172.36, 6.34).
(a) About 68 percent of the y values lie between what two values? These values are ________________. The z-scores are ________________, respectively.
(b) About 95 percent of the y values lie between what two values? These values are ________________. The z-scores are ________________ respectively.
(c) About 99.7 percent of the y values lie between what two values? These values are ________________. The z-scores are ________________, respectively.
OpenStax, Statistics · §6.1 The Standard Normal Distribution · Example 7
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