Question

The life expectancy (in years) of a certain brand of clock radio is a continuous random variable with the probability density function below. f(x)=12/(x+2)2 ifx20 otherwise (A) Find the probability that a randomly selected clock lasts at most 6 years. (B) Find the probability that a randomly selected clock radio lasts from 6 to 9 years. (C) Graph y -fx) for [O, 9] and show the shaded region for part (A). (A) What is the probability that a clock will last no more than 6 years? (Type a decimal rounded to three decimal places as needed.) (B) What is the probability that a clock will last between 6 and 9 years? (Type an integer or decimal rounded to three decimal places as needed.) (C) Choose the graph which represents the function with the correct shading. Qo.s 0.5 0.5 0.5 0.5 0

Answer 1