myopenmath.com 0 Question 10 v a 0/1 pt '0 5 8 4 Details About 8% of the population has a particular genetic mutation. 400 people are randomly selected. Find the standard deviation for the number of people with the genetic mutation in such groups of 400. (If possible, round to 1 decimal place.) :] Question Help: [3 Written Example 8 Message instructor Jumpmnswer i .5 myopenmath.com You are playing a card came, and the probability that you wilan a game is p = 0.35. If you play the game 385 times, what is the most likely number of wins? (Round answer to one decimal place.) Let X represent the number of games (out of 385) that you win. Find the standard deviation for the probability distribution of X. (Round answer to two decimal places.) The range rule of thumb specifies that the minimum usual value for a random variable is p-ZG and the maximum usual value is p+26. You already found I; and a- for the random variable X. Use the range rule of thumb to find the usual range of X values. Enter answer as an interval using square- brackets and only whole numbers. Question Help: Q Written Example 8 Message instructor Submit Question [ Jump to Answer ] 30/1 pt .0 5 3 4 G Details myopenmath.com 30/1pt '05 34 Details When taking a 25 question multiple choice test, where each question has five possible answers, it would be unusual to get C] or more questions correct by guessing alone. Use the Range Rule of Thumb for Unusual Values to answer this question. Give your answer above as a whole number. Question Help: Q Written Example 8 Message instructor Jumpmnswer 7: E] V 7 ' ' ~ / myopenmathcom O " " , fl] / Suppose that you randomly selected 26 adults. Assume 12% of the population smoke. Round all answers to 2 decimal places. a) Using the Range Rule of Thumb, what is the minimum number of usual smokers we can expect to get out of 26 adults? :1 b) Using the Range Rule of Thumb, what is the maximum number of usual smokers we can expect to get out of 26 adults? [:1 c) Would it be unusual to randomly select 26 adults and get 23 smokers? O No, since 23 is between the maximum and minimum usual values. OYes, since 23 is not between the maximum and minimum usual values. Question Help: [3 Written Example 8 Message instructor Submit Question Jump to