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In a study of 23 criminals convicted of antitrust offenses, the average age was 55 years, with a standard deviation of 7.9 years. Construct a 95% confidence interval on the true mean age. (Give your answers correct to one decimal place.)
"MagTek" electronics has developed a smart phone that does things that no other phone yet released into the market-place will do. The marketing department is planning to demonstrate this new phone to a group of potential customers, but is worried abo..
Use an alpha level of .01 and test the hypothesis that the two methods are producing the same mean.
Find the test statistic . Find the standardize test statistic. decide whether the standardize test statist is in the rejection region and decide whether you should reject or fail to reject the null. Sample are random and independent. Claim u1 =u2,..
If a card is drawn at random from a standard 52-card deck, what is the probability that the card drawn is one of the following?
The post-anesthesia care area (recovery room) at St. Luke's Hospital in Maumee, Ohio, was recently enlarged. The hope was that with the enlargement the mean number of patients per day would be more than 25. A random sample of 15 days revealed the ..
suppose the monthly income of assistant managers of our local banks are normally distributed with mean of php40000 and
Estimate the population in 1600 and graph the population trend from 1600 through to 2000
The margin of error in the poll was reported as 6 percentage points (with a 95% degree of confidence). Which statement is correct?
The annual mean vehicle miles of travel per household
question 1 a continuous random variable y has py gt 10 0.16 and p5 le y le 10 0.15. finda py lt 10b py lt 5c py
ten determinations of percentage of water in amethanol solution yield x 0.552 and s 0.037. if mu is the true
question on awards day at the end of the year jasmine has an 85 chance of winning top award in english and a 4 out of 5
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