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Please assist regarding an index based on how people feel about the economy. In this case, the base was 1985 and set at 100. Thus, if the index was at 57.2 in May 2008, and in October 1992 the index was at 54.6, are people feeling better or worse in 2008 than they did in 1992? If the index was at 62.8 in April 2008, what does that mean for May 2008?
Calculate a 90% confidence interval for the percentage of homes in the US that had guns at the time of survey.
Does this sample prove a violation of the guideline that the average patient should pay no more than $250 out-of-pocket?
One-way Analysis of Variance (ANOVA) test - How many treatments are there and What is the total sample size?
Estimate and interpret the p-value of the calculated test statistic above.
Find the probability of accepting a lot as a function of the actual fraction of defective chips. In particular, let the actual fraction of defective chips in a given lot equal any of 0.02, 0.04, 0.06, 0.08, 0.10, 0.12, 0.14, 0.16, 0.18. Then compu..
Stanford Binet IQ scores have a mean of 100 and a standard deviation of 15. Albert Einstein reportedly had an IQ of 160. Convert Einstein's IQ score to a z score.
You are considering adding a new food product to your store for resale. Explain how many units of the new product should be purchased for resale.
We will test to determine if there evidence of an improvement on the final examination, at the 1% significance level. What is the alternate hypothesis?
Suppose that Total Revenue = 200Q and Total Cost = 80 + 50Q where Q, the quantity sold, is a random variable with expected value 20 and variance 4.
Compute the mean number and median number of apples in a bag.
Find the probability of winning jackpot?
The 50 members of the placebo group had blood pressure lowered by an average of 15 points with standard deviation 8 points. To analyze this information we will use a, When testing whether or not the increases in spending are different, the test is ..
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