Question 10 <> Terri Vogel, an amateur motorcycle racer, averages 129.98 seconds per 2.5 mile lap (in a 7 lap race) with a standard deviation of 2.3 seconds. The distribution of her race times is normally distributed. We are interested in one of her randomly selected laps. (Source: log book of Terri Vogel) Let X be the number of seconds for a randomly selected lap. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X N b. Find the proportion of her laps that are completed between 127.94 and 130.9 seconds. c. The fastest 3% of laps are under seconds. seconds to seconds. d. The middle 70% of her laps are from

Terri Vogel, an amateur motorcycle racer, averages 129.41 seconds per 2.5-mile lap (in a 7 lap race) with a standard deviation of 2.25 seconds. The distribution of her race times is normally distributed. We are interested in one of her randomly selected laps. (Source: logbook of Terri Vogel) Let X be the number of seconds for a randomly selected lap. Round all answers to 4 decimal places where possible. Find the proportion of her laps that are completed between 129.57 and 130.63 seconds. (______)The fastest 3% of laps are under(______) seconds. The middle 40% of her laps are from(_____) seconds to(_______) seconds.

Questions A and B. Please!

Page 2 of 5 B. Organizing and Working with Data. 1. Find the z-score for the weight of a 155-pound woman. The mean weight of woman age 20 or older is 170.6 pounds with a standard deviation of 5.4 pounds. Round your answer to two decimal places.

Please use the information provide in the picture to answer the question in the other picture

Please help me solve this? Thanks

Assume that a randomly selected subject is given a bone density test. Bone density test scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw a graph and find P, the 11th percentile. This is the bone density score separating the bottom 11% from the top 89%. Which graph represents P ? Choose the correct graph below. O A. O B. OD. P11 P11 P11 P11 The bone density score corresponding to P1 is (Round to two decimal places as needed.) Click to select your answer(s). APR tv MacBook Air F9 F10 LLA 20 F3 F6 F8 F4 F5 F1 F2 & #3 7 8. %24

Questions 5-6. The average woman’s height is 65 inches with a standard deviation of 3.5 inches. What is the z-score for someone 72 inches tall?     (round to the tenths place) What proportion of women are taller than 72 inches tall?     %    (enter answer as a percent rounded to the nearest hundredth as needed) Questions 7. The average woman’s height is 65 inches with a standard deviation of 3.5 inches. What proportion of women are shorter than 60 inches tall?  (enter answer as a percent rounded to the nearest hundredth as needed) Question 8. In what percentile is a woman that is 61 inches tall? Group of answer choices A 14th percentile B 86th percentile C 10th percentile D 12th percentile

Construct a relative frequency distribution. Round the answers to two decimal places. Response Relative Frequency X Very likely Fairly likely Not too likely Not likely Total Ś

Week 6 help please