final-make-up1

# final-make-up1 - Final Exam Make-up Course : MSCI 3700...

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Final Exam Make-up Version B Course : MSCI 3700 Name: Semester : Fall 97 S.S.N.: Instructors: Mr. Malouf, Dr. Prybutok, and Dr. Spalding

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1. Calculate the estimate of the population standard deviation using following sample? 7, -7, 14, 0, 4, 4 Sorry, no multiple choice on make-up exam. Answer = 2. Calculate the estimate of the population variance using the following sample? -11, -7, 3, 2, -9, 4 Answer = 3. A real estate agent has 17 properties that she shows. She feels that there is a 40% of chance of selling a property and that selling anyone is independent of selling another property. What is the probability of selling no more than 3 properties in one week? Answer = 4. A certain insecticide kills 80% of all insects in laboratory experiments. A sample of 15 insects is exposed to the insecticide in a particular experiment. What is the probability that only one insect will survive? Answer = 5. A town recently dismissed 8 employees in order to meet their new
budget reductions. The town has 5 employees over 50 years of age and 15 under 50. If the dismissed employees were selected randomly, what is the probability that exactly 3 of the dismissed employees were over 50? Answer = 6. Lost-time accidents occur in a company according to a Poisson distribution at an average of 0.5 per month. What is the probability that the number of Lost-time accidents occurring over a period of 10 months will be more than 6? Answer = 7. VGA monitors manufactured by North Texas Electronics have life spans which have a normal distribution with an average life span of 17000 hours and a standard deviation of 1100 hours. If a single

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## This note was uploaded on 03/09/2011 for the course DSCI 2710 taught by Professor Hossain during the Spring '08 term at North Texas.

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final-make-up1 - Final Exam Make-up Course : MSCI 3700...

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