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Question: According to Money, 60% of men have significant balding by age 50.24 If this finding is based on a random sample of 1,000 men of age 50, give a 95% confidence interval for the population of men of 50 who show some balding.
Statistics and Probability, Statistics
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A banks loan officer rates applicants for credit. The ratings are normally distributed with a mean of 200 and a standard deviation of 50. If an applicant is randomly selected, find the probability of a rating that is bet ...
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Adult male heights X have N(70", 3.3") a.) What percent of adult males are shorter than 63"? b.) What percent of males are taller than 70"? c.) What's the 80th percentile of male heights? Show work
Suppose metal shafts produced have a standard deviation of 2.8 and a mean diameter of 210 inches. If 84 shafts are sampled at random, what is the probability that the mean diameter of the sample shafts would be less than ...
A population has a mean u=81 and a standard deviation o=28. Find the mean and standard deviation of a sampling distribution of sample means with a sample size n=239. ux= ox=
Researchers at the University of Pennsylvania School of Medicine have determined that children under 2 years old who sleep with the lights on have a 35% chance of becoming myopic before they are 16. Children who sleep in ...
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