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The monthly demand for the product is normally distributed with a men of 700 units and a standard deviation of 200 units. What is the probability (area under standard normal curve) that demand will be greater than 900 units in a given month?
The store manager is under impression that his sales people do more business if they score higher on the social skills test which was administered this year. 5 victims were selected at random. Below, the results are X =test score, Y =weekly sales ..
What is the mean of this uniform distribution? What is the standard deviation?
The quality control manager for ENTA Inc. must decide whether to accept (a1), further analyze (a2) or reject (a3) a lot of incoming material. Assume the following payoff table is available.
In a poll of 1049 adults, it was found that 21% smoked cigarettes in teh past week. Use a 0.05 significance level to test the claim that less than 25% of adults have smoked within the past week.
To test the effectiveness of a new studying strategy, a teacher randomly divides a sample of 8 students into tow groups, with n = 4 in each group.
There is some concern that exposure to gases used in anesthesiology might be harming health of anesthesiologists. In one study of 525 Michigan nurse anesthesiologists, 10 reported a new malignancy other than skin cancer during the previous year.
The supermarket is open 16 hours per day. What is the probability that the total number of customers who enter the supermarket in one day is greater than 10,000?
Estimating the combined mean values for the given data - find the mean for the combined sample
It is the last play of the game and the famous coach's team is on offense. If it makes 5 yards or more, it wins; if not, it loses. Both sides choose Nash equilibrium strategies.
A confidence interval estimate for the population mean is given to be (41.16, 49.85). If the standard deviation is 16.290 and the sample size is 54, answer each of the following (show all work):
Medical schools last year intended to specialize in family practice. What is the width of a 90% confidence interval for the proportion that plan to specialize in family practice.
Would you use a one-tailed or two-tailed test? Explain your response.
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