Question 318821: Doug wants to find the probability that the average college tuition of his transfer institution will be between $12,000 and $15,500 per year. He knows that the national average is $9800 per year. He collects randomly selected tuition samples from 17 other schools. To calculate this probability, he would best use which distribution?
a) the Student (t) Distribution c) the hypergeometric distribution
b) the Binomial distribution d) the χ2 distribution
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Write T (for true) or F (for false) next to each question
14. _____ Outliers almost never affect the mean of a data set.----F
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15. _____ Rejection of the null hypothesis always means accepting the claim.
------F
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16. _____ Bias introduced into the sampling process can limit the ability to generalize your results.----T
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Probability-and-statistics/318824 (2010-06-30 12:36:04): If Steve’s height is 74 inches, the national average is 57 inches and the standard deviation is 5 inches, what could be said about Steve’s height?
a) It is close to average
b) It is unusual
c) the z-score of Steve’s height is < 3.0
d) Steve’s height is normally distributed
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Since Steve's height is 3.4 std above the mean it is unusual.
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Probability-and-statistics/318821 (2010-06-30 12:32:13): Doug wants to find the probability that the average college tuition of his transfer institution will be between $12,000 and $15,500 per year. He knows that the national average is $9800 per year. He collects randomly selected tuition samples from 17 other schools. To calculate this probability, he would best use which distribution?
a) the Student (t) Distribution c) the hypergeometric distribution
b) the Binomial distribution d) the χ2 distribution
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The student (t) Distribution
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Cheers,
Stan H.
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