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Hotels often overbook reservations, counting on the fact that some people will cancel at the last minute. A certain hotel chain finds that 80% of the reservations will be used. If we randomly select 15 reservations what is the probability that more than 8 but less than 12 will be used?
Create an research question, and then state the experimental and null hypotheses. Then, explain why null and alternative hypotheses have to be mutually exclusive. Finally, discuss how Type I and Type II errors are related to your hypotheses.
an inspector inspects large truckloads of potatoes to determine the proportion p in the shipment with major defects
Nick Jagr, company president, has negotiated most of the issues to sell Blasters through automotive aftermarket retailers in those countries. You have been brought onboard to handle the transportation issues related to the company's initial effort..
What model might you suggest to model the number of purchases per minute? What is the probability that in any one minute at least one purchase is made? What is the probability that no one makes a purchase in the next 2 minutes?
A cereal manufacturer sells boxes of cereal that list the weight as 19 oz. A random sample of 60 boxes was taken, with the contents carefully weighed.
Find the probability that for a randomly selected office hour, the number of student arrivals is 3. (b) What is the probability that he will get at most 5 students in a randomly selected office hour?
A survey indicates that male employees were more likely than females to relocate without being promoted. What information would you want to know before you accepted the results of this survey?
1. Suggest several lurking variables that might help explain the association between marital status and income.
1. given the following probabilities compute all joint probabilities to 2 decimals.pa .9pac .1pbnbspnbspa
Test at the 5% level whether the incidence of smoking depends on the age category
Mean of $32,000 and a standad deviation of $3000. If 100 teachers are randomly selected, find the probability that their mean salary is greater than $32,500.
Critically discuss the difference between the standard deviation of the sampling distribution of the mean and the standard deviation of the sampling distribution of the median when we calculate the probability?
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