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Why is a reciprocal transformation sometimes useful in the analysis of survival data (e.g., on the useful life of a machine tool)? When might analysis with a log transformation be preferable for such data? Not preferable?
Statistics and Probability, Statistics
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People were polled on how many books they read the previous year. How many subjects are needed to estimate the number of books read the previous year within one book with 99% confidence? Initial survey results indicate ...
Many high school students take the AP tests in different subject areas. In 2007, of the 144,796 students who took the biology exam 84,199 of them were female. In that same year, of the 211,693 students who took the calcu ...
1) If there are 150 values in a data set, how many classes should be created for a frequency histogram? A. 5 B. 6 C. 7 D. 8 E. 9 2) . If x is a binomial random variable where n = 100 and p = 0.2, find the probability th ...
Runzheimer International publishes business travel costs for various cities throughout the world. In particular, they publish per diem totals that represent the average costs for the typical business traveler, including ...
What are the ways that IT can help comply with legal requirements and social responsibilities surrounding the sales of alcohol?
A fair coin is flipped 100 times. Your friend proposes a bet where if it lands on heads 49, 50, or 51 times, you win $4, but if it lands on heads more than 51 times or less than 49 times, you lose $1. Should you take the ...
In a panel discussion with 3 industry reps, 2 government reps, and 1 association rep, how many ways can they be seated along a row a) With no restrictions (each person can sit anywhere)? b) If the 3 industry reps must si ...
Find a 95%confidence interval for the population mean, using the formula or technology. Assuming that the population is normally distributed, construct a 95% confidence interval for the population mean, based on the foll ...
A homeless shelter program wants to know if receipt of job training program (yes, no) is related to program satisfaction (measured on a multi-item, Likert scale ). What type of statistical test should be used?
Twelve different video games showing substance use were observed and the duration of times of game play? (in seconds) are listed below. The design of the study justifies the assumption that the sample can be treated as a ...
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