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A certain colege has 490 of the 584 freshman return as sophomores. Does this college have a right to brag that it has an unusually high retention rate?
No, because their retention rate is not more than 3 standard deviations above the expected rate of 74%
Yes, because their retention rate is not more than 3 standard deviations above the expected rate of 74%
No, because their retention rate is over 5 standard deviations above the expected rate of 74%
Yes, because their retention rate is over 5 standard deviations above the expected rate of 74%
Please explain how you got this answer
Why, in my day, kids were much more respectful and didn't cause as much trouble as they do nowadays!" Formulate a hypothesis related to statement that you could test. How would you test it?
question 1 a survey found that the average hotel room rate in new orleans is 89 and the average room rate in phoenix is
Air-America has a policy of booking as many as 14 people on an airplane that can seat only 12. (Past studies have revealed that only 92% of the booked passengers actually arrive for the flight.)
A random sample of 15 first-year CMAs in Denver produces a mean salary of $32,279, with a standard deviation of $1,797. Test the hypothesis that the mean for all Denver first-year CMAs is not equal to $31,129. Use the .05 level of significance.
If 300 stolen cars are randomly selected, what is the mean and standard deviation of the number of cars recovered after being stolen?
calculate the estimate for the standard error of difference between two independent means for s12 13 s22 20 n1 22
what pattern would appear in a graph of a pearson correlation of r -0.80?a. points tightly clustered around a line
question pizza hut wishes to find the 90 confidence interval of the true mean cost of a medium veggie pizza. how large
PTC is a substance that has a strong bitter taste for some people and is tasteless for others. The ability to taste PTC is inherited. About 75% of Italians can taste PTC
Selection of a location for a prospective Wal-Mart creates many questions for executives. A suitable site would be one that has an adequate demand for Wal-Mart offerings, sufficient transportation resources, and an available labor force.
question the joint probability function of two random discrete variables x and y with natural values not negative
1. A developer wants to claim that his new "green" home design results in lower electricity use than in conventional homes. His 2,000 square foot model home uses 1,200 kilowatt hours per month on average.
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