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Unformatted text preview: Assignment-3-solutions due by Midnight (11:59pm) Monday, February 28 th , 2011 (Chapters 5 and 6) True/False questions carry 1.5 points each, Multiple Choices carry two points each and the Essay type questions carry 5 points each. The total score is 50 points. I will round up if your total score is in decimals. True/False Chapter 5 1. The binomial experiment consists of n identical trials, each of which results in either success or failure and the trials are independent but the probability of success on different trials must not be the same. F 2. If the probability of success is 0.4 and the number of trials in a binomial distribution is 150, then its standard deviation is 6. T 3. All continuous random variables are normally distributed. F 4. If a fair coin is tossed 100 times, then the standard deviation of the random variable defined as the number of heads is exactly five. T Chapter 6 5. The number of defective pencils in a lot of 1000 is an example of a discrete random variable. T 6. If a fair coin is tossed 20 times then the probability of exactly 10 Tails is less than 15 percent. F 7. For a binomial probability experiment, with n=150 and p=.2, it is appropriate to use the normal approximation to the binomial distribution. T 8. We do not need to perform the continuity correction if the population is 20 times or more than the sample size. F Multiple choices (2 points each) Chapter 5 1. If p=.5 and n=10, then the corresponding binomial distribution is 1 A. Right skewedA....
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This note was uploaded on 05/05/2011 for the course MGT 501 taught by Professor Sda during the Spring '11 term at Bina Nusantara University.
- Spring '11