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The average base salary for a brand manager is Houston, Tx is $88,592 and the average base salary for a brand manager in Los Angelos, CA is $97,417. Assume salaries are approximately normally distributed, that the standard deviation for brand managers in Houston is $19,900 and in Los Angelos is $21,800. What is the probability that a brand manager in Houston has a base salary in excess of $100,000?
Twelve case of leukemia are reported in people living in a particular census tract over a five year period. Is this number of cases abnormal if only 6.7 cases would be expected based on national cance-incidence rates?
How many selections result in all 6 workers coming from the day shift? What is the probability that all 6 selected workers from the day shift?
Standard deviation 0.3 ton. What is the probability that a fully loaded truck of this model is (a) less than 6 tons, (b) more than 7 tons, (c) between 6 and 7 tons?
The data obtained are shown in the Excel worksheet Problem 4 and below. You are to test to determine if the type of ticket and the type of flight are independent or not. Use alpha = .05
The random variable x is known to be uniformly distributed between 70 and 90. The probability of x having a value between 80 to 95 is
A 99% confidence interval estimate of the population mean can be interpreted to mean that we have 99% confidence that the true population mean will fall within the confidence interval estimate.
Great Plains Roofing and Siding Company inc, sells roofing and siding products to home repair retailers, such as Lowe's and Home Depot, and commercial contractors.
Explain the main differences among integers, rational numbers, real numbers, and irrational numbers. How are these used in everyday life? How would you explain the use of each to someone who did not know about the differences?
If 100 percent of a days production is inspected whenever the sample of 10 gives 2 or more defectives, then what is the pobability that 100 percent of a days production will be inspected?
At 95% level of confidence, can we conclude that the babies using the Gibbs product gained less weight?
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..
An electrical firm manufactures electric light bulbs that have a length of life which is normally distributed with mean and standard deviation equal to 500 and 50 hours, respectively.
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