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Question: Recall that GRE scores are approximately bell-shaped with a mean of 497 and standard deviation of 115. The minimum and maximum possible scores on the GRE exam are 200 and 800, respectively.
a. What is the range for GRE scores?
b. Refer to the result about the relationship between the range and standard deviation in Exercise. Does the result make sense for GRE scores? Explain.
Exercise: Remember that the range for a data set is found as the difference between the maximum and minimum values. Explain why it makes sense that for a bell-shaped data set of a few hundred values, the range should be about 4 to 6 standard deviations.
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Four students riding to school together offer a the excuse of a flat tire on their car for missing a test. On the makeup test, the professor asks the students to each identify the tire that went flat.
Find the mean sample to be 24.7 years. With a standard deviation of 3 years. Is there evidence to support the claim at C,V= -1.70 find the P value
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computing the probability values using normal distribution.the distribution of scores on the sat is approximately
you are a medical claims processor for humana. claims arrive at your desk at an average rate of three claims per day
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question 1 a survey found that the average hotel room rate in new orleans is 89 and the average room rate in phoenix is
As the purchasing agent of your company you are deciding what type of Xerox machine to buy for your company. You have narrowed your choices to brand X and brand Y.
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