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Four women, W1, W2, W3 and W4 check their hats, and the hats are returned in a random manner. Let the sample space be the set of all possible permutations of W1, W2, W3, W4. Let Xj = 1 if jth woman gets her own hat back and 0 otherwise. What is the distribution of Xj? Are Xi's mutually independent?
If 3 different factor levels show a lot of variation between levels this implies:
researchers found a correlation coefficient of r .50 on personality measures for identical twins. a reporter
Write a brief summary of the distribution of the area of homes.
Compute an F-statistic for each linear construct and determine its significance. Also, state what questions each of these contrasts address.
In this context, describe the Type I error possible. How might such an error impact ABI Insurance? In this context, describe the Type II error possible. How might such an error impact ABI Insurance?
The sameple you found that 114 of those adults sampled over the age of 24 smoke. Develop a 95% condience interval for the current porportion of adults over the age of 24 who smoke.
An analyst wishes to include number of older siblings in family as a predictor variable in a regression analysis of factors affecting maturation in eighth graders.
what is the probability that the sample mean will be at least 1000? Do you need to use the central limit theorism to answer this question? explain.
Scores range from 0 to 200. The mean score for students who live on the west coast is about 115. Construct a 90% confidence interval for the unknown mean of the students on the east coast.
In a survey of women in a certain country (ages 20-29), the mean height was 62.9 inches with a standard deviation of 2.81 inches.
Determine the probability that she lives in an all electric home?
a simple random sample of 120 sat scores has a mean of 1540. assume that sat scores have a population standard
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