# statistics

posted by
**afiba**
.

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)

p(x>6)

what are the chances that no tv set last five years

calculate the mean, variance and standard deviation