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A store owner knows that any customer walking into his store has a 35% chance of buying something. What is the probability that 3 of the next 6 customers make a purchase?
A television station estimates that 50% of college students watch the super bowl. For a sample of 120 students selected at random, what is the mean and variance of the number of students who watch the game?
Critically discuss the assumptions, if any, regarding a Chi-square test? What are the assumptions to apply linear regression?
Flaws occur in the interior of plastic used for automobiles according to a Poisson distribution with a mean of 0.02 flaws per panel. If 50 panels are inspected, what is the probability that the number of panels that have one or more flaws is less ..
a casino gambler assums the dice he uses are fair. an investigator recorded the outcomes of 600 rolls of such a
This question is asking for speculation about the possible results of a study if we change the size of the population. It all depends on unknowns such as how representative the 100 adults are of the population.
the lengths of sardines received by a certain cannery have a mean of 4.54 in and a standard deviation of 0.25 in.what
If random samples of 36 download times are selected, what is the probability that the sample mean will be less than 0.84 seconds?
Use a decision tree to recommend a decision. What is the expected value of the market research information? What is the efficiency of the information?
as a statistician you are asked to give advice on designing a customer appreciation event for the bookstore. the
chlorine concentration in a municipal water supply is a uniformly distributed random variable that ranges between 0.74
1. an investment counselor calls witrh a hot stock tip. he believes that if the economy remains strong the investment
a fair coin is tossed independently five times i.e. pheads ptails 0.5what is the probability ofa all headsb no headsc
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