Mathematics

Mathematics, 19.10.2019 13:20, alyonaprotopopova

For the most recent year available, the mean annual cost to attend a private university in the united states was $26,889. assume the distribution of annual cost follows the normal probability distribution and the standard deviation is 4,500. ninety-five percent of all students at private universities pay less than what amount?

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Mathematics, 09.09.2019 21:30, shanice13

Private colleges and universities rely on money contributed by individuals and corporations for their operating expenses. much of tis moeny is put int a fund called an endowment, and the college spends only the interest earned by the fund. a recent survey of 8 private colleges in the united states revealed the following endowments (in millions of dollars): 60.2, 47.0, 235.1, 490.0, 122.6, 177.5, 95.4, and 222.0. summary statistics yield x-bar (aka the mean)= 180.975 and s = 143.042. a.) calculate a 95% confidence interval for the mean endowment of all the private colleges in the united states assuming a normal distribution for the endowments. b.) calculate a 99% confidence interval for the mean endowment of all the private colleges in the united states assuming a normal distribution for the endowments. answers are good, but show me the work so i can follow along

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Mathematics, 13.09.2019 04:30, Parmenter

Aresearcher wants to compare student loan debt for students who attend four-year public universities with those who attend four –year private universities. she plans to take a random sample of 100 recent graduates of public universities and 100 recent graduates of private universities. which type of random sampling is utilized in her study design?

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Mathematics, 02.11.2019 05:31, wi8wuwj283jendjdudjd

Assume a recent sociological report states that university students drink 4.10 alcoholic drinks per week on average, with a standard deviation of 1.9101. suppose jason, a policy manager at a local university, decides to take a random sample of 125 university students to survey them about their drinking habits. determine the mean and standard deviation of the sampling distribution of the sample mean alcohol consumption. provide your answer with precision to two decimal places. mean of sampling distribution = standard deviation of sampling distribution =

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Mathematics, 13.11.2019 06:31, ginadesor3461

Private colleges and universities rely on money contributed by individuals and corporations for their operating expenses. much of tis moeny is put int a fund called an endowment, and the college spends only the interest earned by the fund. a recent survey of 8 private colleges in the united states revealed the following endowments (in millions of dollars): 60.2, 47.0, 235.1, 490.0, 122.6, 177.5, 95.4, and 222.0. summary statistics yield x-bar (aka the mean)= 180.975 and s = 143.042. a.) calculate a 95% confidence interval for the mean endowment of all the private colleges in the united states assuming a normal distribution for the endowments. b.) calculate a 99% confidence interval for the mean endowment of all the private colleges in the united states assuming a normal distribution for the endowments.

Answers: 2

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