55% of American households own and still use a DVR. Suppose that 15 American households are randomly chosen. What is the probability that 5 OR 6 of them own and still use their DVR?
Added by Brian G.
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- Probability that a household owns and still uses a DVR, \( p = 0.55 \) - Number of trials (households chosen), \( n = 15 \) - We want the probability that exactly 5 or 6 households own and use a DVR. Show more…
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55% of American households own a DVR. Suppose that 15 American households are randomly chosen. How many of them would you expect to own a DVR?
Supreeta N.
According to the Nielsen Company, approximately 30% of U.S. households had a digital video recorder (DVR) at the end of the year 2008. Suppose a simple random sample of 15 households is taken. Find the following probabilities: (a) [5 pts] Find the probabilities that exactly four of the sampled household have a DVR. Answer: (b) [5 pts] Find the probability that fewer than three of the households have a DVR. Answer: (c) [5 pts] Find the probability that more than one household has a DVR. Answer:
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