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During a 36 year period, lighting killed 3239 people in the us. Assume that the rate holds true today and is constant throughout the years, find the mean and the probability that no one in the us will be killed by lighting today.
Based on a sample of 49 students, Healthy Lifestyles Incorporated (HLI) would like to apply the central limit theorem to ma ke various estimates. a) Compute the standard error of the sample mean. (Round your answer to 2 decimal places.)
1) Twenty-five factory workers were asked how many vacation days they take a year. The average of the sample was 22.85 days, and the standard deviation was 5.80 days. In the past HR uses an average of 25 vacation days per worker in order to ..
Why is "rounding-down" the LP solution the suboptimal way to solve Integer programming problems? Can you describe why?
What happens to the confidence interval and the power of the test at a particular point of interest. As one increases the sample size of a test, all else remaining the same.
What do you notice about the two histogrum and (therefore) about the estimates of probability of getting above 0?
A Pew research poll was conducted to investigate opinions about global warming. The respondents who answered yes when asked if there is solid evidence that the earth is getting warmer were then asked to select a cause of global warming.
Mean daily amount of her tips was $24.85, with a standard deviation of $3.24. Can Ms. Brigden be 99% confident that she is earning an average of $20 or more per day in tips?
The means appear to be very close, but not the variances. At α = .05, is there a difference in variances? Show all steps clearly, including an illustration of the decision rule.
(a) Give a 95% confidence interval for the mean ARSMA score of Mexicans. (b) What assumptions does your condence interval require?
Write down the differential equations which describe the probabilistic behavior of the unit in time as a Markov process.
At 0.01 significance level is it sensible to conclude that modification reduced number of traffic accidents?
If the researcher wants to test if the blood pressure measurements after the procedure are different from the blood pressure measurements before the procedure, what will the null and alternative hypotheses be? Treat the differences as (blood press..
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