wabassignnal C '1] + '3 2022 -A9 Slals l v'v'} I4 2022 - AP SKINIWBMSSIGII H5 1022 M9 5'1"; i W 13- [-M Points] YMSSTATZ 8.E.032. ASK YOUR TEACHER PRACTICE ANOTHER You are planning a sample survey of small businesses In your area. You will choose an SR5 of businesses listed in the telephone book's Yellow Pages. Experience shows that only about half the businesses you contact will respond. (a) If you contact 134 businesses, is it reasonable to use the binomial distribution with n = 134 and p = 0.5 for the numbeerho respond? Explain why. Each observation fails Into a "success' or \"failure." There Is a fixed number n of observations. The n observations are all Independent. The probability of success ,0 Is the same for each observation. None of the binomial conditions are met. (b) What is the expected number (the mean) who will respond? ('3) What '5 the probability that 70 or lewer will respond? (Use the normal approximation.) (d) How large a sample must you take to Increase the mean number of mspondenm to 125? 14- [-13 Points] YMSSTATZ 5.E.056. ASK YOUR TEACHER PRACTICE ANOTHER in a certain year there were 920 road fatalities In a certain state, according to the Department of Motor Vehicles. Of these, 345 were alcohof-relatecl. A DMV analyst wants to randomly selet several groups of 35 mad fatalities for further study, Find the mean and standard deviation lo: the number of alcohol-related road fatalities In such groups of 35. mean standard deviation What Is the probability that such a group will have no more than 6 alcohol-related road fatalities