Find percentage of adults that have iq in given range
Assume that adults have IQ scores that are normally distributed with a mean of u=105 and a standard deviation o=15. Find the percentage of adults that have an IQ between 94 and 116.
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A distribution with a mean of µ = 62 and a standard deviation of s= 8 is transformed into a standardized distribution with µ= 100 and s= 20. Find the new, standardized score for each of the following values from the original population
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How many workers need to be sampled in order to estimate the population proportion of workers who worried about retiring comfortably to within +/- 0.02 with 95% confidence?
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