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Given in the following table are 15 randomly selected state expenditures (in millions of dollars) for the ?scal year 1997 (source: The World Almanac and Book of Facts 2000).
5,722 7,685 13,862 21,975 35,302 4,441 16,200 25,7914,808 5,130 2,426 39,296 4,002 6,818 7,145
(a) Test the data for normality.
(b) If the data are not normal, try a suitable transformation to make the transformed data approximately normal.
Suppose we want to compare the observed and expected number of events among the group 250 treatments.
Calculating the mean, do you expect it to be greater than the median or less than the median. Why?
an airline carriers 100 passengers and has doors with a height of 78 inch. height of men are normally distributed with
given a sample size of 22 with sample mean 726.2 and sample standard deviation 85.3 we perform the following hypothesis
in a test for effectiveness of garlic for lowering cholesterol 47 subjects were treated with garlicin. cholesterol
If the sales, employment, production, and other business series increase or decrease over a period of time and approximate a straight line, the equation for this growth is given by
At the 5 percent level of significance, can we conclude that the mean weight is greater than 16 ounces? Determine the p- value.
You suspect the distribution of the population is not Normal and may be moderately skewed. Which of the following statements is correct?
Calculate the population mean margin of error for a 90% confidence interval when sigma is 4 and sample size is 36. Standard IQ test has mean of 98 and standard deviation of 16.
For a random sample of 12 days at the Downtown location, the mean number sold was 78.80 and the standard deviation was 14.25. At the .05 significance level, is there a difference in the mean number of hamburgers sold at the two locations?
We are interested in comparing the proportions of males and females who think earning a large salary is very important to them. I surveyed 200 of each gender and recorded their answers to the question as yes or no.
in a sample of discharge of suspended solids from a phosphate mine it was noted that the mean daily discharge was 27
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