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Universities receive gifts and donations from corporations, foundations, friends, and alumni. It has long been argued that universities rise or fall depending on the level of support of their alumni. The table below reports the total dollars raised during a recent academic year by a sample of major US. universities. In addition, it reports the percentage of that total donated by alumni.
a. Do these data indicate that total fundraising and alumni contributions are correlated? Test using α = .05
b. What assumptions must hold to ensure the validity of your test?
consider the following time series data of sales per yearyearsales199522.2199623.0199724.4199825.8199927.6enter these
Can the company conclude that the mean kilo of product treated in one hour by this machine is more than 15,000? Use a 5% level of significance.
What is the probability that an account is paid off in less than 13 days? Find the 95th percentile for the payoff time- that is, a time for which 95% of the accounts are paid off in less than that time
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You conduct 8 Bernoulli trials for which the probability of success is 0.85. What is the probability that you will obtain exactly two successes?
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In a survey of 500 randomly selected high school students, it was determined that 288 played organized sports. What is the probability that a randomly selected high school student plays organized sports?
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With standard deviation of 15. Test hypothesis that Mrs. Smith and Mrs. Jones are equally effective teachers. Use 0.10 level of significance.
A survey taken in a restaurant shows the following number of cups of coffee consumed with each meal. Construct an ungrouped frequency distribution.
suppose bolts are being manufactured using a process so that it is known that the length of the bolts follows a normal
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