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An experiment consists of choosing a subset from a fixed number of objects where the arrangement/order of the chosen objects is not important. Determine the size of the sample space when you choose the following:
(a) 3 objects from 24 :
(b) 2 objects from 9 :
(c) 6 objects from 22 :
A real estate broker hoped to develop an equation that could be used to predict the sales price of homes in a certain suburb. It seemed to him that the most important variable
Can we conclude that the mean time for a game is less than 3.50 hours? Use the .05 significance level.
weights were measured for 5 female and 5 male beetle pupae. test the hypothesis of no difference in mean weight of
A nutritionist wants to estimate the mean amount of cholesterol in a certain variety of chicken eggs. She wants to be within 14 mg. with 99% confidence.
pretests posttests and threats to internal validity.answer the question either by writing the design name or by
a manufacturer claims that the batteries it makes will last 18 hours with a standard deviation of 1.5 hours. if the
let x1...xn1 be an iid sample from nu1o2 and let y1...yn2 be an iid sample from nu2o2 where parameters u1u2 and o2 are
The sample mean life is 805 hours with 64 hours of the sample standard deviation. Is there enough evidence to conclude that the manufacturer's claim is true at the 5% significance level?
what is an interaction? describe an example and identify the variables within your population work social academic etc.
imagine the following game of chance. there are four dollar bills on the table. your roll a fair die repeatedly. every
A random sample of 15 customers is selected, and the results are as follows: 8.02 4.08 5.79 8.73 5.47 5.64 8.01 10.49 8.35 5.9 9.66 9.91 3.82 6.68 6.17 a) calculate arithmetic mean, median, mode, first quartile and third quartile.
Let X denote the waiting time until the tenth call arrives. What is the pdf of X? What are the moment generating function, mean , and variance of X?
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