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Guidelines for the Jolly Blue Giant Health Insurance Company say that the average hospitalization for a triple hernia operation should not exceed 30 hours. A diligent auditor studied records of 16 randomly chosen triple hernia operations at Hackmore Hospital and found a mean hospital stay of 40 hours with a standard deviation of 20 hours. "Aha!" she cried, "The average stay exceeds the guideline." The p-value for a right-tail test of her hypothesis is
A. Between .05 and .10
B. Between .025 and .05
C. Between .01 and .025
D. Less than .01
FT% is normally distributed with a mean of 0.721 and a standard deviation of 0.082. Which percentage of NBA players have a FT% lower than 0.784? (Round off to the nearest percent.)
If a male soldier and female soldier are paired up what will be the mean and standard deviation for the difference in heights for each possible pair?
In each of the following scenarios, which would be larger, the mean or median, or would the mean and median be about the same? Provide reasoning--think about the shape of the histogram for the data and how the shape would affect the relationship b..
What is the probability that the variable will take the value 2? What is the mean of the distribution?
Does achieving a high grade in reading cause an individual to earn a high grade in Statistics? Explain your answer with reference to the term lurking variable.
Conduct a statistical test to determine if the sample is representative of the population.
Testing for population mean - How would this information be useful to you if you were the college register?
The finished subassembly two must be inspected. A list of activities, their predecessors, and their durations is given in the following Table.
Describe the error in the conclusion. Given: There is a linear correlation between the number of cigarettes smoked and the pulse rate. As the number of cigarettes increases the pulse rate increases. Conclusion: Cigarettes cause the pulse rate to i..
A box contains four 40-W bulbs, five 6-W bulbs and six 70-W bulbs, if three bulbs are selected without replacement randomly. What is the probabilty that three are 70-W bulbs?
In this table, my research is about the average amount of money people expect to spend on attomeys when they are injured. Is there a difference, depending on type of injury? Do people expect to spend more when the injury happened in a car, on job,..
If the top 15% of the test scores are usually good enough for admission to law school, find the cut off score for gaining admission.
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