math 302 week 3 test.docx - Part 1 of 6 Binomial...

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Part 1 of 6 - Binomial Distribution4.0/ 5.0 PointsQuestion 1 of 201.0/ 1.0 PointsA coin is flipped 30 times. What is the probability of getting 15 or more heads? Round answer to4 decimal places. Answer: 0.5722
Question 2 of 201.0/ 1.0 PointsAn unprepared student takes a 10 question TRUE/FALSE quiz and ended up guessing on all the problems. Find σ. Round answer to 4 decimal places. Answer: 1.5811
Question 3 of 200.0/ 1.0 PointsApproximately 10% of all people are left-handed. Out of a random sample of 15 people, what is the probability that 4 of them are left-handed? Round answer to 4 decimal places. Answer:
Question 4 of 201.0/ 1.0 PointsSuppose a random variable, x, arises from a binomial experiment. If n = 14, and p = 0.13, find the P(X = 3) using Excel. Round answer to 4 decimal places. Answer: 0.1728
Question 5 of 201.0/ 1.0 PointsIf random variable X has a binomial distribution with n =7 and P(success) = p =0.6, find the probability that X is at least 6. (That is, find P(X ≥ 6) (round to 4 decimal places) Answer:
Part 2 of 6 - Contingency Tables1.0/ 1.0 Points

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