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GMAT (Graduate Management Admissions Test) scores are normally distributed with a mean of 500 and a standard deviation of 100.
A) What proportion of scores fall in the interval from 350 to 450?
B) What proportion of scores fall in the interval from 550 to 650?
C) A certain graduate business school accepts all applicants whose GMAT scores exceed 620. Approximately what proportion of all those taking the GMAT would qualify for admission to this school?
what is the probability that ms. a mr. b and mrs. c win the rst second and third prizes respectively in a drawing if
How do we use a least squares regression line? What is the range for the coefficient of determination?
From the fourth quarter of 1997 to the first quarter of 1998, revenues declined. What happened on a seasonally adjusted basis? d)Compute the forecast for the second quarter of 2002. e)Find the regression equation to predict the long term trend in th..
How many students weigh less than 128 pounds? b) how many students weigh more than 165 pounds? c)how many students weigh between 135 and 165 pounds?
A sample has just been taken with the following lengths: 21.25, 22.0, 21.5, 20.75, 21.25, 21.35, 21.35, 21.35, 21.35, 21.35, 21.35, and 21.35. Is the new seamstress performing at an acceptable quality level?
Eagle Outfitters is a chain of stores specializing in outdoor apparel and camping gear. It is considering a promotion that involves mailing discount coupons to all its credit card customers.
question calculate sp the sum of products of deviations for the following scores. note both means are decimal values
What are the similarities between dividing two fractions and dividing two rational expressions?
Suppose that an IQ test was given to a large group of persons, the scores are assumed to be from a normally distributed population, that mean = 100 and s (standard deviation) = 15.
Would he be justified in concluding that walking slowly may cause high cholesterol or that high cholesterol may influence walking speed? Explain why or why not.
Explain finding value of test statistic for the given data also interpret the result. Can Mr. Ratter compute which the mean weight of the bags is less than 50 pounds.
If random samples, each with n = 9 scores, are selected from a normal population with µ = 80 and σ = 36, then what is the expected value for the distribution of sample means?
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