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Planning Parenthood, a national organization that assists teenage mothers with pregnancy, estimates that approximately 37% of the women coming into the center had contracted a sexually transmitted infection. They wish to plan a study to obtain a more statistically relevant estimate.
How many samples are required if we wish a 95% confidence interval that is within 0.03 of the true population proportion?
Suppose two companies, A and B, that produce super computers. Each can manufacture the next generation super computer for math or for chip research.
Assume that JVC is trying to decide how to rate a new stereo system composed of a receiver, CD player, & speakers. The firm's economists have estimated that 2-different groups will buy these products
Following is a payoff matrix for Intel and AMD. In each cell, 1st number refers to AMD's profit, while second is Intel's.
What is the mean of the sampling distribution of the difference between means?
An increasing number of consumers believe that they have to look out for themselves in the marketplace. According to a survey conducted y the Yankelovich Partners for USA Weekend magazine, 60% of all consumers have called an 800 or 900 telephone n..
National polls are often conducted by asking the opinions of a few thousand adults nationwide and using them to infer the opinions of all adults in the nation. Explain who is in the sample and who is in the population for such polls. Please use a ..
A recent study by Ohio State University (March 5, 2008) suggests that students with cell phones may take more risks than students that do not have cell phones.
The given matrix demonstrate the payoffs for an advertising game between Hilton and the Oriental. The companies can choose to advertise or to not advertise.
Kodak & Fuji develop photographic film. Assume that there are no other significant manufactures, so that Kodak and Fuji constitute a duopoly
Suppose that a pair of 14-sided dice are rolled (the sides are numbered 1-14 and yes, these do actually exist).
A finite lot of 40 digital watches includes 30% nonconforming units. Using the hypergeometric distribution, what is the probability that a sample of 6 will contain 3 nonconforming watches? Show your work.
Elly's Hotdog Emporium is famous for its chilidogs. Elly's latest sales indicate that 30% of the customers order their chilidogs with hot peppers. Suppose 15 customers are selected at random. What is the probability that between two and six people..
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