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Marketing: Coffee Tasting The Tasty Bean Coffee Company claims that its coffee is so good that you can distinguish it from any other coffee. Five different brands of coffee (one of them Tasty Bean) are set before tasters who are to pick the one that tastes the best. Suppose that there is really no difference in the way any of these coffees taste; however, each of four tasters picks one coffee anyway (not knowing which is which, because the coffee is in identical cups). What is the probability that
a) All four tasters choose Tasty Bean?
b) None of them chooses Tasty Bean?
c) At least three choose Tasty Bean?
Which of the given experiments can be modelled by Poisson distribution?
When we say we have confidence level of 95% what do you believe our "margin of error" is?
Report the t-value, whether you accept or reject Ho, and whether the difference was significant in a brief sentence.
Let z represent the standard normal variable and suppose a value is randomly selected. Find each of the following probabilities by:
he population consists of all 15 year olds living in the attendance district of a local high school. You plan to obtain a simple random sample of 200 such residents by using the roster of the high school as the sampling frame.
By using the normal probability distribution, what is the probability the car will be repaired in 35 minutes or less?
Data in table represent number of consumer complaints against major U.S. airlines. If one complaint from table is arbitrarily chosen, determine the probability that it was filed against United Airlines.
Rank the funds by using this alternative measure of risk. Which, if any outperformed the market on the risk-adjusted basis.
Scores on a test have a mean of 73 and Q3 is 81. The scores have a distribution that is approximately normal. Find P90.
Using an appropriate statistical test determine if there is a significant association between gender and satisfaction with the new initiative.
Do you think this detection bias would strengthen or attenuate the association between vegetarian diet and learning disabilities? Defend your choice briefly.
What sample size would be needed to obtain an error of ±10 square millimeters with 99 percent confidence?
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