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The variance for a sample was found to be 49. What is the sample standard deviation?
A.2401B.9C.49D.7
Calculate the maximum reduction in the standard deviation
A particular department store knows from past experience that 17% of their customers have the store's credit card. What is the probability that out of the next 120 customers that at least 15% have the store's credit card? (please express your answer ..
1) How much does a sleeping bag cost? Let's say you want a sleeping bag that should keep you warm in temperatures from 20°F to 45°F. A random sample of prices ($) for sleeping bags in this temperature range is given below. Assume that the population ..
What is the probability that the two selected candies are the same flavour?
Compute z values for each and comment on your findings.
In conjunction with the housing foreclosure crisis of 2009, many economists expressed increasing concern about the level of credit card debt and efforts of banks to raise interest rates on these cards. The banks claimed the increases were justified. ..
Two orchestra's are auditioning for a spot in the finals. Their performances were rated and received the following scores: Orchestra 1: n1 = 31, x1= 78, s1 =10..........Orchestra 2: n2 = 30, x2 = 72, S2 = 14. What is the perfomance statistics,..
Describe a situation where it would be appropriate to use forecasting.
Anxiety and Country
Produce a short report to update your manager on both the method and results of your analysis and the introduction od 'Six Sigma'.
Pick a lottery game
A screening test for a newly discovered disease is being evaluated. In order to determine the effectiveness of the new test, it was administered to 900 workers; 150 of the individuals diagnosed with the disease tested positive.
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