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A businessman's outfit consists of a pair of pants, a shirt, and a tie. Suppose he can choose from among 5 pairs of pants, 8 shirts, and 15 ties.
a. How many different outfits are possible?
b. Suppose a winter outfit includes a sweater and he can select one of 7 sweaters. Now how many different winter outfits are possible?
A square yard of carpet is examined for surface defects. Currently, the process produces an average of 2.4 defects per square yard. What is the probability of finding 2 or more surface defects in the sample.
Return to Example 16.3 and change the choice of α to α = 5. How does this affect the Susarla-van Ryzin estimator? Now change α = 10 and compute the Susarla-van Ryzin estimator. Compare with results with α = 3 and α = 5. What do you conclude?
a large chain retailer purchases a certain kind of electronic device from a manufacturer. the manufacturer indicates
Test to see if there is a significant difference between mean completion times, at the 5% significance level. Do you think pairing on technicians was worthwhile in this case? Explain.
If the population standard deviation is $7, and a random sample of 50 properties is chosen, what is the probability that the sample average will be below $35?
find the z-scores that separate the middle 71 of the distribution from the area in the tails of the standard normal
Hull Manufacturing Corp. (HMC), a Canadian company, manufactures instruments used to measure the moisture content of barley and wheat. The company sells primarily to the domestic market, but in Year 3, it developed a small market in Argentina.
Suppose that you throw a dice 2 consecutive times and that you have to make a probabilities chart that show all the possible results of the 2 throws. How many branches will result?
a recent survey reported that in a sample of 300 students who attend two-year colleges 105 work at least 20 hours per
For the normal distribution curve with mean of 19 and a standard deviation of 6, which range of the variable shows an area under the curve corresponding to a probability of approximately 99.7%?
About 500 are observed, and 30% are observed being returned to Enterprise. Is there statistical evidence to support the claim of the executives? Conduct a complete (5 step) hypothesis test using a .05 significance level (95% confidence).
during the study patients have relapses of the fever at an instantaneous rate of 1.85 per month. what is the
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