# Week 4 tests.docx - Question 1 of 20 0.0 1.0 Points Find...

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Question 1 of 20 0.0/ 1.0 Points
Question 2 of 20 0.0/ 1.0 Points The length of a human pregnancy is normally distributed with a mean of 272 days with a standard deviation of 9 days (Bhat & Kushtagi, 2006). How many days would a pregnancy last
Question 3 of 20 0.0/ 1.0 Points Arm span is the physical measurement of the length of an individual's arms from fingertip to fingertip. A man’s arm span is approximately normally distributed with mean of 70 inches with a standard deviation of 4.5 inches. Find length in inches of the 99th percentile for a man’s arm
Part 2 of 6 - Continuous Random Variables and Probability Functions Questions 1.0/ 1.0 Points Question 4 of 20 1.0/ 1.0 Points Which type of distribution does the graph illustrate?
Part 3 of 6 - The Central Limit Theorem Questions 0.0/ 1.0 Points Question 5 of 20 0.0/ 1.0 Points Click to see additional instructions The manufacturer of a new compact car claims the miles per gallon (mpg) for the gasoline consumption is mound-shaped and symmetric with a mean of 24.6 mpg and a standard deviation of 9.5 mpg. If 30 such cars are tested, what is the probability the average mpg achieved by these 30 cars will be greater than 28? Answer: Round your answer to 4 decimal places as necessary. For example, 0.1357 would be a legitimate entry. Make sure you include the 0 before the decimal.
Part 4 of 6 - The Exponential Distribution Questions 1.0/ 4.0 Points Question 6 of 20 0.0/ 1.0 Points The commute time for people in a city has an exponential distribution with an average of 0.5 hours. What is the probability that a randomly selected person in this city will have a commute time between 0.4 and 1 hours? Answer: (round to 3 decimal places)
Question 7 of 20 0.0/ 1.0 Points