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The sales of High-Brite Toothpaste are believed to be approximately normally distributed with a mean of 5000 tubes per week and a standard deviation of 750 tubes per week. To have a 0.90 probability that the company will have sufficient stock to cover the weekly demand, how many tubes should be produced?
Finds that 3 contain errors. If the accountant's theory is correct, what is the probability that at least 3 invoices contain errors in a random sample of 10?
Historically the average age of European soccer players is reported as 26 years with a standard deviation of 4 years. A random sample of 81 European professional soccer players has an average age of 27 years.
steam flows through a pipe at an average temperature t 200 c the inner and outer radii of the pipe are r1 8 cm and r2
a survey was conducted of 611 office workers to determine telephone answering practices i.e how many were able to
If sales is the variable you are trying to explain and you have 2 independent variables of color and price. The color coefficient is 100, and the price coefficient is -200.
The means appear to be very close, but not the variances. At α = .05, is there a difference in variances? Show all steps clearly, including an illustration of the decision rule.
suppose there are three bills in a wallet. one of thebills is a 1 one is a 5 and one is a 10 bill. you selecttwo bills
High precision titanium spheres are popular components in manufacturing of ball bearings. A factory has ordered a shipment of 5000 titanium spheres from aboard. It is found that the shipment has a mean radius of 1.5 cm with a standard deviation ..
With a Rejection Region of 8, 9 or 10, what is the probability of a Type II error, if the job applicant has a probability of identifying the odd sample with p = 0.5?
the following probability model shows the distribution of doctoral degrees from u.s. universities in 2009 by area of
if you had the chance to set up a simple experiment at your workplace to test a hypothesis would you have your research
A consumer watchdog organization wants to see whether Bank N in the northern part of a state has a higher default rate than Bank S in the southern part of that same state.
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