Height of college women
Supposing that the height of college women are normally distributed with the mean of 67 inches and standard deviation 2.5 inches, what percentage of women are between 64.5 inches and 67 inches?
A) 81.9%
B) 49.9%
C) 2.1%
D) 34.1%
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The average age of doctors in certain hospital is 47.0 years old. Suppose the distribution of ages is normal and has a standard deviation of 6.0 years. If 25 doctors are chosen at random for a committee
A simple random sample of 81 births of Chinese babies resulted in the mean birth weight of 3245 g and standard deviation of 466 g. Test the claim that the standard deviation of birth weights of Chinese babies is 567g,
Determine the mean and standard deviation of the sampling distribution for samples of 267 women?
Samples of aircrew upon long haul schedules are tested to determine the amount of time they spend in stage IV sleep. It has been hypothesized that individuals suffering from tiredness because of long haul work might spend less time per night in de
Samples of our students from applied experimental design class were polled about the number of hours they spent studying for last exam. All students anonymously submitted the number of hours on 3x5 card. There were 24 individuals in section of the
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An instant lottery provides you the probability of winning upon any one play of 0.02. If plays are independent, and you play 3 times: What is the probability that you will win on all three of these plays?
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