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A recent survey of 1030 U.S. adults selected at random showed that 647 consider the occupation of firefighter to have very great prestige. Estimate the probability (to the nearest hundredth) that a U.S. adult selected at random thinks the occupation of firefighter has very great prestige. (Enter a number.)
What is one share of this stock worth to you if you require a 10% rate of return on similar investments?
Give a practical interpretation of each β-estimate in the model.- Give a practical interpretation of the coefficient of determination, R2.
Find the critical value for zα/2 that corresponds to a degree of confidence of 98% - Find the critical value for tα/2 corresponding to n = 12 and 95% confidence level.
If a unit is busy when an emergency call is received, the call is immediately routed to another service. The company is considering buying a second ambulance.
The 267 interarrival times are saved in the PHISHING file. Construct a frequency histogram for the interarrival times. Is the data skewed to the right?
Suppose there are two samples of size 6 and 7, with a rank sum of 58 in the sample of size 6. Using the Wilcoxon rank-sum test, evaluate the significance of the results, assuming there are no ties.
Assuming the binomial distribution applies with a sample size of n = 15, find the probability of 5 or more successes if the probability of a success is 0.30.
the gre combined scores for students applying to an engineering schools graduate program are normally distributed with
Calculate the duration of an 8 percent, $1000 par bond that matures in three years if the bond's YTM is 10 percent and interest is paid semiannually.
You have been hired as an operations research consultant by a company to reevaluate the inventory policy for one of its products. The company currently uses the basic EOQ model.
1. what information does calculating standard deviation provide? how is the z-score related to standard deviation?2.
What is the probability that the sample mean would differ from the true mean by greater than .04 dollars if a sample of 183 5 gallon pails is randomly selected? Round answer to 4 decimal places.
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