# Suppose a random variable x follows a poisson

• Test Prep
• 11
• 98% (164) 161 out of 164 people found this document helpful

This preview shows page 7 - 9 out of 11 pages.

Question 14 of 200.0/ 1.0 PointsSuppose a random variable, x, follows a Poisson distribution. Let μ = 2.5 every minute, find the P(X ≥ 125) over an hour. Round answer to 4 decimal places. Answer: 0.9793
Question 15 of 201.0/ 1.0 PointsSuppose a random variable, x, follows a Poisson distribution. Let μ = 3 every day, find the P(X ≤12) over a week. Round answer to 4 decimal places. Answer: 0.0245
Question 16 of 200.0/ 1.0 PointsIf random variable X has a Poisson distribution with mean = 4.5 find the probability that X is more than 4. (That is, find P(X>4) (keep 4 decimal places) Answer: 0.5321
Question 17 of 201.0/ 1.0 PointsThe mean number of visitors at a national park in one weekend is 55. Assume the variable follows a Poisson distribution. Find the probability that there will be at most 71 visitors at this park in one weekend. (That is, find P(X≤71) (keep 4 decimal places) Answer: 0.9841
Question 18 of 200.0/ 1.0 PointsIf random variable X has a Poisson distribution with mean = 10, find the probability that X is more than 8. (That is, find P(X>8) (keep 4 decimal places) Answer: 0.6671
Part 6 of 6 - Probability2.0/ 2.0 Points
• • • 