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The number of hours a 100 watt bulb will operate before burning out is approximately normally distributed with standard deviation σ=50.
a. if the mean µ=900, what is the probability that a light bulb will burn out in less than 966 hours of use?
A population with u=73 and o=9 is transformed into a new population with u=10 and o=2. What is the new value for each of the following scores in the population?
In study of a clinical for an allergy drug 115 of the 204 subjects reported experiencing important relief from their symptoms.
An elevator has a uniform distribution ranging from 0 to 4 minutes. Find the mean and standard deviation of x, the time a customer on the second floor waits for an elevator.
Their monitoring plan will take a random sample of 5 days sales per month and use the sample mean sales to identify shops that are under-performing. Establish the lower limit sales such that only 5% of the shops would have a sample sales mean belo..
Suppose you went to the Bureau of Labor Statistics web site and found several predictors of your salary. State three possible predictors and a simulated multilinear regression equation along with their p-values. What does your p-values tell you ab..
If a filled container of juice is selected at random, what is the probability that is is a nonconforming container and what is the probability that is was filled in machine II?
Chrysler Corporation agrees to allow you to randomly select 40 of its new Dodge Caravans to test the highway mileage. Chrysler claims that the caravans get 28mpg on the highway.
Compute the probability that student eats at fast food restaurant 2 or more times per week?
Selection of a location for a prospective Wal-Mart creates many questions for executives. A suitable site would be one that has an adequate demand for Wal-Mart offerings, sufficient transportation resources, and an available labor force.
The Complaints Department of a popular used car dealer receives most complaints about the electrical system, particularly the starter.
Fit a linear regression model for bp against sodium. Do you think this is a model with a good fit? Why?
At.01 significance level, is there difference in mean number of times men and women order take-out dinners in month? Determine the p -value?
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