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A Nascar team goes on tour for six moths. One major piece of equipment for the car is subject to breakdowns cause by the sudden failure of a specific component. Because the failed component cannot be repaired, the team must carry a stock of repair units of the component, but the cost will be $2000 for each spare unit taken. However, if the equipment fails and a spare is not available, a new unit will have to be flown in on a special mission at a cost of $3000 per unit delivered. An estimate of the number of spares required is given probability distribution below:
Number of spares required
0
1
2
3
Probability
0.2
0.3
0.4
0.1
Determine the number of spares that should be provided if the objective is to minimize costs.
Find the P value or an interval containing the P value for the sample test statistic.
according to a website about salaries the national average salary as of october 2003 for a human resources clerk was
In order to estimate the proportion of families who prefer female baby-sitters to male baby-sitters with an error of at most 8 percentage points and with at least 95 percent confidence, how large a sample should be taken?
What is the probability that more than 88 cartons arrive in at least 5 of the next 6 months given normal distribution with mean of 80 cartons per month and standard deviation of 7 cartons per month?
Find the for a test of the claim that the proportion with lawn mowers in Omaha is higher than 65%. Among 497 randomly selected homes.
Philadelphia is conducting a study on the characteristics of tourists who drive to Eagles football games. Previous studies indicate that approximately 70% of all game attendees are people who decided to drive from out of town
1. nbspif the mean number of hours of television watched by teenagers per week is 12 with a standard deviation of 2
The population's standard deviation is 2.00 hours per week. Based on a sample of 49 students, Healthy Lifestyles Incorporated (HLI) would like to apply the central limit theorem to make various estimates.
suppose that for a very large shipment of integrated-circuit chips the probability of failure for any one chip is 0.10.
Is there evidence that the change was successful in reducing the wait time? (use 0.05 level of significance)
if an analysis of variance is used for the following data what would be the effect of changing the value of ss1 to
A loan application is received this morning. What is the probability that:
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