Question

telemarketer. You alwoodto mool has a will be a telemarketer? 2. Telemarketers. One out of every eight calls to your house is a tele record whether the next call is a teen the next call is a telemarketer. od seoque to be (n.) What is the probability that the next time the phone rings, it will b al to the body and all (b.) If the phone calls are independent, what is the probability the 3rd call after dinner will be a telemarketer? d et b ola yilidt bud. Bundan bail (5) d a von nilagning aid aid - YDY (e.) If you lose 30 seconds of your time every time you have to talk to a telemarketer. what is the expected amount of time you will lose on the next phone call? (d) What is the standard deviation of time you will lose on the next phone call

Answer 1

Sf T: Suernt that a calt is a telemankelel @ b(T) 1/8- 0.1250 P(3elemarketer) P(TTT): PCT) P(T) PCT) (1-Vg)(1-8) ): 49 %12 0.0957 Call 9f x: Amount of tme lost 30 X EC) P)30x+Oy PX /g3/3 30/g= 3.5 seconds PC = 3d k+/g = 112.5 EC) 6:J E-(Ex)-112.5-(375) - |9,9216 sec