Problem 2. When someone presses SEND on a cellular phone, the phone attempts to set up a call by transmitting a SETUP message to a nearby base station. The phone waits for a response, and if none arrives within 0.3 seconds, it tries again. If it doesn't get a response after n= 4 tries, the phone stops transmitting messages and generates a busy signal. (a) Draw a tree diagram that describes the call setup procedure. (b) If all transmissions are independent and the probability that a SETUP message will get through is p, what is the PMF of K, the number of messages transmitted in a call attempt? (c) As a manager of a cellular phone system, you want the probability of a busy signal to be less than 0.01. If p = 0.8, what is the minimum value of n necessary to achieve that goal? (d) Find and sketch the CDF of N, the number of attempts made by the cellular phone for p=1/3

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Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.