Question: D Question 4 16 pts Points (6) 4a) The life of an electronic equipment is normally distributed with a mean of 700 hours and a

D Question 4 16 pts Points (6) 4a) The life of

D Question 4 16 pts Points (6) 4a) The life of an electronic equipment is normally distributed with a mean of 700 hours and a standard deviation of 80 hours. What is the probability that such equipment fails after 580 hours? Points (10) 4b) A random sample of 100 men is chosen from a population with mean height 70 inch and standard deviation 2.5 inch. What is the probability that the average height of the sample men is greater than 69.5? (Hint: use central limit theorem) To Submit: 1. Type your final answers in the box(es) below. 2. Show me your work on new 1 page of paper by showing it clearly to the webcam for 3 seconds 3. After this quiz is submitted. Upload a photo of this scratch paper to Part B. Answers Answer4a: Enter the required probability in six decimal places Answer4b: Enter the required probability in six decimal places 20 pts D Question 5

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