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the manufacturer of a popular brand of tv set claims that 95 percent of its sets last at least 5 years without requiring a single repair. a sample of 8 purchasers of these tv sets was selected at random from a list of purchasers five years earlier. use this information to calculate th e following probabilties.

p(x less than or equal to 5)
what are the chances that no tv set last five years
calculate the mean, variance and standard deviation

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