The probability density function of the time you arrive at a terminal (in minutes after 8: 00 a. m.) is for . determine the following probabilities. round the answers to 3 decimal places (e. g. 98.765). a) you arrive by 9: 00 a. m. b) you arrive between 8: 15 a. m. and 8: 30 a. m. c) you arrive before 8: 10 a. m. on two or more days of five days. assume that your arrival times on different days are independent.

Unaware that 35% of the 10000 voters in his constituency support him, a politician decides to estimate his political strength. a sample of 200 voters shows that 40% support him. a. what is the population? b. what is the parameter of interest? state its value c. what is the statistics of the interest? state its value d. compare your answers in (b) and (c) is it surprising they are different? if the politician were to sample another 200 voters, which of the two numbers would most likely change? explain