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The Information Commons in the main library has 150 personal computers. The probability that any one of them will require repair on a given day is 0.02. To find the probability that exactly 25 of the computers will require repair, one would use what type of probability distribution?
let the number of trials be n = 3, and let the probability of success be p = 0.0228. Use a calculator to compare:
Use a significance level to test the claim that the mean weight loss is greater than 0. Based on these results does the diet appear to be effective. Does the diet appear to have practical significance.
To test whether there is significant mean difference between two groups using independent sample t test.
Suppose 10 smokers are randomly selected and the number of smokers who started to smoke before the age of 18 is recorded. a) explain why this is binomial experiment.
Develop a regression model for predicting the difference in the asking price and selling price.
Make three-month and four-month moving averages for this time series. Does the three-month or four month moving average provide the better forecast? Explain.
Researcher asked group of 30 students - 12 of them supported change, 13 of them didn't, and 5 had no opinion. This is not binomial model as?
What does central limit theorem say about distribution of John's average payoff after 365 bets in a year?
She then uses the mean and standard deviation of these values to estimate the mean value for all parts the operator is making. Construct a 95% confidence interval for the mean value assuming a normal distribution.
Develop a spreadsheet model to determine the optimal number of magazines to order each day. Use 500 replications and round the demand values generated by the normal random number generator (RNG) to the closest integer value.
Based on surveys conducted in 1989 and 1999, a researcher compared the proportion of high school age females interested in a career in science in 1989 with the proportion in 1999. He concluded that the proportions were not significantly different ..
Explain the logic of the ordinary least Square (OLS) method? How are the least squares formulas for the slope and intercept derived?
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