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The cost of 5 gallons of ice cream has a variance if 49 with a mean of 30dollars. What is the probability that the sample would differ from the true mean by less than 0.6 dollars if the sample of 145 5 gallon pails is randomly selected.
1.an inspector inspects large truckloads of potatoes to determine the proportion p with major defects prior to using
the table below shows the price of a volatile stock from the months january 1999 through december 1999 as determined by
sample surveys conducted in a large county in a certain year and again 20 years later showed that originally the
To findout 95 percent with confidence interval for the mean amount a citation. Police Chief Aaron Ard of River City reports 500 traffic citations were issued last month.
Students from the class for an oral exam, what is the probability that 3 female students and 5 male students will be selected?
What are the endpoints of a 95 percent confidence interval for the proportion defective. (Round your answers to 3 decimal places).
After computing a confidence interval, the investigator believes that the results are meaningless because the width of the interval is too large. In reconstructing the interval, the investigator should: decrease the sample size.
The standard deviation of the sample is 5. find the best point estimate of the mean. find the 95% condidence interval of the mean score for all golfers.
an urn contains three red balls and four black ones. the two balls are drawn at random without replacement. the random
Statistical Quality in an Organization
a manufacturer of paper products wants to compare the variation in daily production levels at two paper mills.
A psychiatrist hires you to study whether her clients self-disclosed more while sitting in an easy chair or lying down on a couch. All clients had previously agreed to allow the sessions to be videotaped for research purposes.
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