Concept explainers
(a)
To find: The number of members went to the gym at least
(a)
Answer to Problem 11PPS
The number of members went to the gym at least
Explanation of Solution
Given:
The sample are
The mean is
The standard deviation is
Calculation:
Find the z-value for
Find the z-value for
So,
The
According to Empirical rule, the percent of data more than 50 is,
The number of members went to the gym at least 50 times are as follows.
Therefore, the number of members went to the gym at least
(b)
To find: The probability that a member selected at random went to the gym more than
(b)
Answer to Problem 11PPS
The probability that a member selected at random went to the gym more than
Explanation of Solution
Given:
The sample are
The mean is
The standard deviation is
Calculation:
Find the z-value for
So, the value more than
Therefore, the probability that a member selected at random went to the gym more than
Chapter 11 Solutions
Glencoe Algebra 2 Student Edition C2014
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