# APUS CLE _ MATH302 I003 Sum 20 _ Tests & Quizzes.pdf -...

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8/23/2020 APUS CLE : MATH302 I003 Sum 20 : Tests & Quizzes 1/9 1.0/ 1.0 Points 1.0/ 1.0 Points 1.0/ 1.0 Points Week 3 Test Return to Assessment List Part 1 of 6 - Binomial Distribution 4.0/ 5.0 Points Question 1 of 20Approximately 10% of all people are left-handed. Out of a random sample of 15 people, what is the Answer Key: 0.0428|.0428 Feedback: P(x = 4), In Excel, =BINOM.DIST(4,15,0.1,FALSE) Question 2 of 20If random variable X has a binomial distribution with n=9 and P(success) =p= 0.4, find the standard Answer Key: 1.4697 Feedback: in Excel, =SQRT(9*0.4*0.6) Question 3 of 20An unprepared student takes a 10 question TRUE/FALSE quiz and ended up guessing on all theproblems. Find σ Tests & Quizzes Tests & Quizzes
8/23/2020 APUS CLE : MATH302 I003 Sum 20 : Tests & Quizzes 2/9 1.0/ 1.0 Points 0.0/ 1.0 Points 1.0/ 1.0 Points Answer Key: 1.5811 Feedback: in Excel, =SQRT(10*0.5*0.5) Question 4 of 20It was found that 60% of people have a dog as a pet. If a random sample of 11 people is selected,what is the variance of the number of people that have a dog as a pet? (That is, what is Var(X)?) (round to 2 decimal Question 5 of 20If random variable X has a binomial distribution with n =8 and P(success) = p =0.5, find theprobability that X is at most 3. (That is, find P(X Feedback: In Excel, =BINOM.DIST(3,8,0.5,TRUE) Part 2 of 6 - Contingency Tables 1.0/ 1.0 Points
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