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The new Lucky Lady Casino wants to increase revenue by providing buses that can transport gamblers from other cities. Research shows that these gamblers tend to be older, they tend to play slot machines only, and they have losses with a mean of $182 and a standard deviation of $105. The buses carry 35 gamblers per trip. The casino gives each bus passenger $50 worth of vouchers that can be converted to cash, so the casino needs to recover that cost in order to make a profit. Find the probability that if a bus is filled with 35 passengers, the mean amount lost by a passenger will exceed $50. Based on the result, does the casino gamble when it provides such buses?
The forecast for the third quarter is 3,000 units; the seasonal index for the quarter is 1.05. What are the seasonally adjusted sales for the quarter?
Draw suitable distribution curve indicating position of the TS and CV.
To speed up the process in a blood testing procedure, blood samples from 3 people are combined into one mixture. The mixture will only test negative if all the individual samples are negative.
Calculate expected number of interruptions per day. Calculate standard deviation.
The formula for a 95% confidence interval yields the interval 640 ± 5.88. Find out whether each of the given statements is true or false.
You're asked to determine whether the workers live in the community. Your personnel department provides the following table:
Would it be reasonable to conclude that the population mean is 63 pounds?
Estimate with 90% confidence the difference in the level of satisfaction with service between the two branches.
Conduct an analysis of variance
The following frequency distribution reports the number of frequent flier miles, reported in thousands, for employees of Brumley Statistical Consulting, Inc. during the first quarter of 2004.
Does this result support original claim, or is population percentage considerably less than 45%. Use alpha=.05 for level of significance.
A test of hypothesis is conducted at the .05 level of significance to test either or not the population correlation is zero.
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