Question
The mean life expectancy for a healthy American is 78 years with a standard deviation of 5 years. Assuming that the distribution is bell-shaped, to
The mean life expectancy for a healthy American is 78 years with a standard deviation of 5 years. Assuming that the distribution is bell-shaped, to what age can about 95% of all Americans expect to live? Provide an upper and lower bound.
a) 77 and 79
b) 63 and 93
c) -4 and 4
d) 68 and 88
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Essentials Of Statistics For The Behavioral Sciences
Authors: Frederick J Gravetter, Larry B. Wallnau
8th Edition
1133956572, 978-1133956570
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