urgent help plese

The graph of a probability distribution is shown below. The graph is made up of a line segment and two curved pa'ls. For each part below, suppose a real number is picked according to the above probability distribution. Do not round any of your answers. [a] Find the probability that the number picked is not between 4 and 'Ir'. D {b} Find the probability that the number picked is between 42 and 63. D {c} Find the probability that the number picked is T. D BIG Corporation produces just about everything but is currently interested in the lifetimes of its batteries, hoping to obtain its share of a market boosted by the popularity of portable CD and MP3 players. To investigate its new line of Ultra batteries, BIG randomly selects 1000 Ultra batteries and nds that they have a mean lifetime of 92'? hours, with a standard deviation of 88 hours. Suppose that this mean and standard deviation apply to the p_opulation of all Ultra batteries. Complete the following statements about the distribution of lifetimes of all Ultra batteries. (a) According to Chebyshev's theorem, at least 56% of the lifetimes lie X 8 9 between hours and hours. {Round your answer to the nearest ' whole number.) (b) According to Chebyshev's theorem, at least of the lifetimes lie between 751 hours and 1103 hours