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1) Find the viarance for the given data. Round your answer to one or more decimal place than the original data. 5.1,4.7,8.8,3.5,5.6
Find the standard deviation for the given sample data. Round your answer to one more decimal place than is present in the original data.
1) The manager of an electrical supply stored measured the diameters of the rolls of wire in the inventory. The diameters of the rolls (in meters) are listed below.
0.29 0.223 0.31 0.549 0.667 0.184 0.462
2) The numbers listed below represent the amount of precipotation ( in inches) last year in six different U.S. cities.16.7 12.0 39.1 48.7 14.1 21.6
Why is it significant to be familiar with frequency distributions in the business world? Provide examples by using a distribution chart from a set of data.
What is the purpose for post tests? To determine how much difference exists between the treatments.
Fitting a straight line to a set of data yields the following prediction line: i=2+5xi
The correlation between the returns on Ceramics Craftsman, Inc., and the returns on the S&P 500 is 0.675. The variance of the returns on Ceramics Craftsman, Inc., is 0.004225, and the variance of the returns on the S&P 500 is 0.001467.
Finding the probability of each event in a group of events of different possibility
Suppose that among workers exposed to asbestos in a shipyard in 1980, 33 died over a 10-year period from COPD, whereas only 24 such deaths would be expected based on statewide mortality rates. Is the number of deaths from COPD in this group excess..
Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. What is the lower limit of the 90% confidence intervel? What is the upper limit of the 90% confidence interval?
A manufacturer of printed circuit boards uses exponential smoothing with trend to forecast monthly demand of its product. At the end of December, the company wishes to forecast sales for January.
Suppose adults have basically distributed IQ scores with a mean of 100 and an SD of 15. Find P65, the 65th percentile. Use the Z table.
A recent study was designed to compare smoking habits of young women with those of young men. A random sample of 150 women revealed that 45 of them smoked.
Assume the FDA has established 200 grams of fruits and vegetables as minimum daily intake. Determine the probability woman selected will meet this minimum intake?
A company is interested in evaluating its current inspection procedure on shipments of 20 identical items. They take a sample of 5 and accept the shipment if no more than the allowed maximum of the samples are found to be defective.
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