A psychologist finds that the intelligence quotients (IQ) of a group of patients are normally distributed, with a mean of 102 and a standard deviation of 16. Find the percent of the patients with IQs         a. above 114                      b. between 90 and 118

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Q: Suppose a population is known to be normally distributed with a mean, μ, equal to 116 and a standard…

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A: Mean:The formula for finding mean is shown below:

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Q: 2. Suppose that in an examination, the cut-off score for passing is 75 for 200 persons. If the mean…

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Q: In​ 2007, the mean property crime rate​ (per 100,000​ people) for the 24 states west of a certain…

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Q: Suppose a population is known to be normally distributed with a mean, μ, equal to 116 and a standard…

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Q: Suppose the main percentage in algebra is 70% and the standard deviation is 8% What percentage of…

A: Given,  mean value(μ) =70%  standard deviation(σ) = 8%Z=x-μσZ1=62-708=-1Z2=94-708 =3