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The heights of 10 sixth graders are listed in inches: {54, 62, 54, 57, 60, 61, 53, 63, 59, 56}.
(a) Find the mean, median, mode, sample variance, and range.(b) Do you think that this sample might have come from a normal population? Why or why not?
Compute the 95% confidence and prediction intervals for values of y for X = 40. Determine correlation coefficient, Interpret.
Use mathematical induction to prove that : 1*2+2*3+3*4+....+n(n+1)(n+2)/3 for all n >_1 and (2) Find d=gcd (721 , 448), find integers s and t with d=721s + 448t, and put the fraction 448/721 in lowest terms.
Florida consumers are confident about the economy. verify the 90% confidence interval. State in a sentence the meaning of the derived confidence interval .494, .568. What would be your conclusion?
A researcher conductued a study of the access speed of 35 hard drives and concluded that his maximum error of estimate was 35. If he were to conduct a second study to reduce the maximum error of estimate to 7, about how many hard drives should he ..
Suppose that about 48% of all infants are girls. The maternity ward at a large hospital handles 1000 deliveries per year. A smaller hospital in the same city records about 50 deliveries per year. At which hospital is it more likely that between 46..
What is the approximate permutation test P-value and What is the permutation test P-value for testing the equality of the means versus the hypothesis that the mean change for the treatment group is larger than the mean treatment for the control gro..
Find out whether this is enough evidence to accept or reject manager's null hypothesis, using alpha = .01. Is this test left-tailed, right-tailed or two-tailed?
Weight of the .5 cubic yard bag of landscape much is normally distributed with mean of 40 pounds and standard deviation of 1. Determine the probability that the bag will weigh more than 40 pounds?
What is the approximate probability that the total weight of the passengers exceeds 4000 pounds? Use the four-step process to guide your work.
The Food King Chain employs more than 3,000 people. The worker's ages are approximately normally distributed, with a mean of 31 years and a standard deviation of 4.3 years.
What is the probability that it will be handled by Adam? If it turns out that the problem was solved, what is the probability that it was handled by Adam?
You are a realtor with a small business. You use a simple 2 variable linear regression analysis for quick first glance house price estimates using square footage of the house.
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