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Normal_distribution_homework_CH_6_sectio

# Normal_distribution_homework_CH_6_sectio - EXPONENTIAL...

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ECO 260 – section A (8:00 am) Homework – Chapter 6 Due date : December 8 before class UNIFORM DISTRIBUTION 1. #1 b, c, d. 2. #3 b, c, d. NORMAL DISTRIBUTION 1. #9 b, c. (NORMDIST) 2. #11 a, b, c, d, e. (NORMSDIST) 3. #15 a, b, c, d, e. (NORMSINV) 4. If X is a random variable with µ = 150 and σ = 25, find each of the following: a) The 25 th percentile (NORMINV). b) The 96 th percentile (NORMINV). c) prob(X < 128) d) prob(X > 155) e) prob(140 < X < 200) f) prob(250 < X < 275) (use 6 decimal places)
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Unformatted text preview: EXPONENTIAL DISTRIBUTION 1. #31 a, b, c. (EXPONDIST) 2. #45 b, c. (EXPONDIST) 3. An insurance company believes that hurricanes occur at the rate of 2.5 per year (assume that hurricanes can occur anytime during the year). Find each of the following (EXPONDIST): a) prob(time between hurricanes is less than 6 months (.5 years)) b) prob(time between hurricanes is more than 2 years) c) prob(time between hurricanes is between 9 months and 18 months)...
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