What is the probability that a person waits

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Question: The number of left-handed students follows a binomial distribution, and the probability that an individual is left-handed is 0.13. In a class of 70 students, what is the probability that: a. Exactly 10 students are left-handed? b. More than 15 students are left handed? c. At most 12 student are left-handed? 2. A study found that the average wait time in a McDonald's drive-thru is 4 minutes and the standard deviation is 1.2 minutes. It is also known that the distribution of these times is normal. a. What is the probability that a person waits over 6 minutes? b. What is the probability that a person waits between 3 and 3.5 minutes? c. Someone claimed that only 10% of people waited longer than they did. If this is true, how many minutes did they wait?

Reference no: EM133761457

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