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1. In a binomial distribution n = 8 and π = 0.2. Find the probabilities of the following events.
a)X = 2 b)X ≤ 2 c)X ≥ 3
2. A telemarketer makes six phone calls per hour and is able to make a sale on 30 percent of these contacts. During the next two hours, find the following.
a)The probability of making exactly four sales is _______. b)The probability of making no sales is _______. c)The probability of making exactly two sales is _______. d)The mean number of sales in the two-hour period, µ is _______.
3. In a binomial situation n = 8 and π = 0.35. Determine the probabilities of the following events using the binomial formula. (Round your answers to 4 decimal places.)
a) X = 6 b) X = 7
Below is a plot of the Olympic gold medal winning performance in the high jump (in inches) for the years 1900 to 1996.
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A radio station wants to know if residents in their area are in favor of a proposed tax increase. They invite listeners to call in to respond to the poll. 645 of the 800 who responded were against the tax.
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