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Review book A advertises an average SAT gain of 40 points wtih a standard deviation of 12 points, and review book B claims an average SAT gain of 35 points with a standard deviation of 15 points. assuming both assertions are correcting and assuming normal distributions, which review book is more likely to result in an SAT gain over 60 points?
The sample mean life is 5.5 years with a standard deviation of 0.6 years. If you were constructing a 99% two-sided confidence interval estimate, the lower limit would be?
Verify value of t for the independent Variable, using formula. (That is, using formula in the Formula Sheet compute the t statistic , given data provided in the print out).
If a complete failure occurs, calculate the probability that the fault occurred in:
Graph the p.d.f and show that the probability of the part failing in the first 200 weeks is 1/8
Suppose 1.5 percent of the antennas on new Nokia cell phones are defective. For a random sample of 200 antennas, find the probability that:
A survey is planned to determine the mean annual family medical expenses of employees of a large company. The management of the company wishes to be 95% confident that the sample mean is correct to within plus-or-minus $50 of the population mean.
The goal is to get people thinking about how they can actually use correlation and regression in their real life, and where and how can they can really benefit from these techniques?
FBI Report Do greater universities tend to have more property crime, would you speek that the correlation is low, moderate or high
You roll two fair dice, one red and one green. What is the probability of getting a number less than 5 on both?
If 60 percent of those people chewing the gum are successful in stopping smoking, what is the probability that in a group of four smokers using the gum at least one quits smoking?
Determine whether the following equations have a solution or not? Justify your answer. What type of solution do you get for quadratic equations where D
How does bell-shaped curve for sampling distribution of sample means for samples of size n =120 compare tobell-shaped curve for sampling distribution of sample means for samples of size n =95?
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