4 Answered Questions for the topic Statistcs

Statistcs

08/21/18

how many of these people would have I.Q.s below 67?
A standard I.Q. test produces normally distributed results with a mean of 100 and a standard deviation of 15 for the city of New York. Out of approximately 8,400,000 citizens, how many of these... more
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08/21/18

rejection region: null hypothesis
Lodging Cost. A travel association claims that the mean daily lodging cost for two adults traveling together on vacation in San Francisco is at least $240. A random sample of 24 such groups of... more
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Statistcs

11/10/12

the heights of 1000 students in a college are normally distributed with a mean 5’10” and SD 2”.
the heights of 1000 students in a college are normally distributed with a mean 5’10” and SD 2”. Use 68% for the region from the mean to 1-SD on either side; 94% for the region from the mean to 2-SD... more
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Statistcs

10/26/12

find x for randon variables 4 probability .10, 6 pis .60 and 8 probabiltiy .30 compute the mean and expected value
P stands for for probabiltiy for each number 4, 6, 8 computr the mean and the expected value
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