# # 7 - Due Wednesday 11:59 PM EDT Description Current Score...

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Due: Wednesday, October 24, 2007 11:59 PM EDT Current Score: 30 out of 30 Question Score Submission Options Description Homework 7 deals with various applications of binomial probability distributions. Instructions Homework 7 You are allowed 4 submissions. The due date is 11:59 pm Wednesday Oct. 24. 1. 10/10 points Last Response | Show Details All Responses Notes Assume that 13% of people are left-handed. If we select 10 people at random, answer the following questions: a. What is the probability that there are 3 lefties in the group?0.099 .099 (Use 3 decimal places.) b. What is the probability that there are at least 3 lefties in the group?0.131 .131 (Use 3 decimal places.) c. Find the expected number of right-handers in the group.8.7 8.7 d. Find the standard deviation of the number of right-handers in the group.1.063 1.063 (Use 3 decimal places.) e. What is the probability that they are not all right-handed?0.752 .752 (Use 3 decimal places.) f. What is the probability that there are exactly 5 righties and 5 lefties?0.0047 .0047 (Use 4 decimal places.)

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g. What is the probability that the majority is right-handed?0.995 .995 (Use 3 decimal places.) 2. 2/2 points Last Response | Show Details All Responses Notes A state end-of-grade exam in American History is a multiple-choice test that has 50 questions with 4 answer choices for each question. A student must get at least 25 correct to pass the test, and the questions are very difficult. Question 1
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# 7 - Due Wednesday 11:59 PM EDT Description Current Score...

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