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In a game of chance, a number of draws are made with replacement from a box of tickets; 500 of these tickets are labeled 1 and 450 of these tickets are labeled 1, and the winnings are equal to the sum of draws. Determine whether 50 draws or 500 draws are more likely to maximize your winnings; briefy justify your answer.
Use the moving-average method to make seasonally-adjusted trend estimates for the third and fourth quarters of 2013 and the first two quarters of 2014. Assume that the cyclical and irregular forces have minimal influence on the time series. (Show d..
Scores by women on the SAT-I test are normally distributed with a mean score of 998 and a standard deviation of 202. scores by women on the ACT test are normally distributed with a mean of 20.9 and a standard deviation of 4.6 assume the two tests ..
one hundred items are simultaneously put on a life test. suppose the life-times of the individual items are independent
A sample of 400 bags of dog food which are advertised to contain twenty-five pounds had a mean content weight of 24.5 pounds with a standard deviation of 3 pounds.
Based on the data, determine the 95 percent confidence interval evaluate for true population mean?
A deck of cards contains 52 cards, 13 in each of four suits (hearts, diamonds, clubs and spades). Suppose you have been dealt five cards without replacement from a randomly shuffled deck of cards. Find the probability that al five cards are hearts..
a researcher selects a sample from a population with m 30 and uses the sample to evaluate the effect of a treatment.
The firms are actually violating at least one regulaltion, what is the pmf of the number of firms visited by the inspector that are in violation of at least one regulation?
Thus, the first question he examines is as follows: Is there a difference in the number of points students earned on their educational statistics pretests and posttests?
Suppose that you are conducting a survey of customer satisfaction regarding their cellular phone. If you called 11 households selected at random, what is the probability that:
Suppose you take a sample of size 100 of test scores and find that the mean is 63. What is the z-score corresponding to this sample mean?
You are given an annual time series with 40 consecutive values and asked to fit a fifth-order autoregressive model.
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