n a survey of a group of​ men, the heights in the​ 20-29 age group were normally​ distributed, with a mean of 67.4 inches and a standard deviation of 4.0 inches. A study participant is randomly selected. Complete parts​ (a) through​ (d) below.   (a) Find the probability that a study participant has a height that is less than 68 inches. The probability that the study participant selected at random is less than 68 inches tall is nothing. (Round to four decimal places as​ needed.) ​ (b) Find the probability that a study participant has a height that is between 68 and 70 inches. The probability that the study participant selected at random is between 68 and 70 inches tall is nothing. (Round to four decimal places as​ needed.) ​ (c) Find the probability that a study participant has a height that is more than 70 inches. The probability that the study participant selected at random is more than 70 inches tall is nothing. ​(Round to four decimal places as​ needed.)

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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In a survey of a group of​ men, the heights in the​ 20-29 age group were normally​ distributed, with a mean of 67.4 inches and a standard deviation of 4.0 inches. A study participant is randomly selected. Complete parts​ (a) through​ (d) below.
 
(a) Find the probability that a study participant has a height that is less than
68 inches. The probability that the study participant selected at random is less than
68 inches tall is nothing. (Round to four decimal places as​ needed.)
(b) Find the probability that a study participant has a height that is between
68 and 70 inches. The probability that the study participant selected at random is between 68 and 70 inches tall is nothing. (Round to four decimal places as​ needed.)
(c) Find the probability that a study participant has a height that is more than 70 inches. The probability that the study participant selected at random is more than 70 inches tall is nothing.
​(Round to four decimal places as​ needed.)
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