If a gambler places a bet on the number 7 in roulette, he or she has a 1/38 probability of winning a. Find the mean and standard deviation for the number of wins of gamblers who bet on the number 7 one hundred times. b. Would 0 wins in one hundred bets be an unusually low number of wins? a. The value of the mean is u= (Round to one decimal place as needed.) The value of the standard deviation is o = . (Round to one decimal place as needed.) b. Would O wins in 100 bets be an unusually low number of wins? O A. Yes, because 0 is below the minimum usual value. B. No, because 0 is within the range of usual values. O C. Yes, because 0 is within the range of usual values O D. Yes, because 0 is greater than the maximum usual valueDetermine whether the following value is a continuous random variable, discrete random variable, or not a random variable. a. The square footage of a pool b. The hair color of adults in the United States c. The height of a randomly selected person d. The weight of a hamburger e. The distance a football travels in the air after being thrown T. The time required to upload a file to the Internet a. Is the square footage of a pool a discrete random variable, continuous random variable, or not a random variable? O A. It is a discrete random variable O B. It is a continuous random variable O C. It is not a random variable b. Is the hair color of adults in the United States a discrete random variable, continuous random variable, or not a random variable? O A. It is a continuous random variable. O B. It is a discrete random variable. O C. It is not a random variable. c. Is the height of a randomly selected person a discrete random variable, continuous random variable, or not a random variable? O A. It is a discrete random variable. O B. It is a continuous random variable. O C. It is not a random variable d. Is the weight of a hamburger a discrete random variable, continuous random variable, or not a random variable? O A. It is a continuous random variable. O B. It is a discrete random variable. O C. It is not a random variable. e. Is the distance a football travels in the air after being thrown a discrete random variable, continuous random variable, or not a random variable? O A. It is a continuous random variable. O B. It is a discrete random variable. O C. It is not a random variable. f. Is the time required to upload a file to the Internet a discrete random variable, continuous random variable, or not a random variable? O A. It is a discrete random variable.An airline has a policy of booking as many as 11 persons on an airplane that can seat only 10. (Past studies have revealed that only 91.0% of the booked passengers actually arrive for the flight.) Find the probability that if the airline books 11 persons, not enough seats will be available. Is it unlikely for such an overbooking to occur? The probability that not enough seats will be available is]. (Round to four decimal places as needed.) Is it unlikely for such an overbooking to occur? A. It is unlikely for such an overbooking to occur, because the probability of the overbooking is greater than 0.05. O B. It is unlikely for such an overbooking to occur, because the probability of the overbooking is less than or equal to than 0.05. O C. It is not unlikely for such an overbooking to occur, because the probability of the overbooking is greater than 0.05. O D. It is not unlikely for such an overbooking to occur, because the probability of the overbooking is less than or equal to than 0.05.Complete parts (a) through (d) Based on data from a car bumper sticker study, when a car is randomly selected, the number of bumper stickers and the corresponding probabilities are as shown below Click the icon to view the data table. a. Does the given information describe a probability distribution? Yes O No b. Assuming that a probability distribution is described, find its mean and standard deviation. The mean is (Round to the nearest tenth as needed.) The standard deviation is (Round to the nearest tenth as needed.) c. Use the range rule of thumb to identify the range of values for usual numbers of bumper stickers. The maximum usual value is (Round to the nearest tenth as needed.) The minimum usual value is (Round to the nearest tenth as needed.) d. Is it unusual for a car to have more than one bumper sticker? Explain. O A. No, because the probability of more than 1 bumper sticker is 0. 111, which is greater than 0.05. O B. Yes, because the probabilities for random variable x from 2 to 9 are all less than 0.05. C. No, because the probability of having 1 bumper sticker is 0.095, which is greater than 0.05. O D. Not enough information is given.Assume that the given procedure yields a binomial distribution with n trials and the probability of success for one trial is p. Use the given values of n and p to find the mean u and standard deviation o. Also, use the range rule of thumb to find the minimum usual value u - 20 and the maximum usual value p + 20. In an analysis of preliminary test results from a gender-selection method, 20 babies are born and it is assumed that 50% of babies are girls, so n = 20 and p =0.5. The value of the mean is ul =]. (Do not round.) The value of the standard deviation is o =].(Round to one decimal place as needed.) The minimum usual value is u - 20 = (Round to one decimal place as needed.) The maximum usual value is u + 20 = (Round to one decimal place as needed.)X Table of numbers of bumper stickers and probabilities P(x) 0.794 0.095 0.042 0.017 0.015 0.012 0.009 0.007 0.005 0.004 Print Done