Population Mean, Probability, and Sample
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1. Population mean = 19.1
15% of data 22.6
Find standard deviation.
2. Population mean 120
Standard deviation 5.7
What is the probability an individual between 120 and 121.3?
3. Population mean 120
Standard deviation 5.3
Sample n =30
Find probability that the sample mean is between 120 and 121.8.
4. Theatre has 150 seats
Normally 5% no shows (fully occupied)
Find the probability 11 or more seats are no shows.
5. Probability of activity= .54
Sample n =530
Find the probability that at least 261 of n is active.
6. Probability of activity .53
Sample n =192
Find probability active in n >89<109.
7. Women = 26% of unquantified group
Sample n of group = 358
Find the probability > 112 women in n.
8. Probability x = .77
Sample n =300
Find probability > 54 are not x
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Solution Summary
Provides steps necessary to find standard deviation and probability.
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