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d. The middle 50% of her laps are from seconds to seconds.

d. The middle 50% of her laps are from seconds to seconds.

Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
Functions and Change: A Modeling Approach to College Algebra (MindTap Course List)
6th Edition
ISBN:9781337111348
Author:Bruce Crauder, Benny Evans, Alan Noell
Publisher:Bruce Crauder, Benny Evans, Alan Noell
Chapter5: A Survey Of Other Common Functions
Section5.3: Modeling Data With Power Functions
Problem 2E: Planetary Velocity The following table gives the mean velocity of planets in their orbits versus...
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I already have a-c answered I need help with letter D answer
Terri Vogel, an amateur motorcycle racer, averages 129.23 seconds per 2.5 mile lap (in a 7 lap race) with a standard deviation of 2.28 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 NO b. Find the proportion of her laps that are completed between 127.32 and 128.45 seconds. c. The fastest 4% of laps are under d. The middle 50% of her laps are from seconds. seconds to seconds.
Transcribed Image Text:Terri Vogel, an amateur motorcycle racer, averages 129.23 seconds per 2.5 mile lap (in a 7 lap race) with a standard deviation of 2.28 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 NO b. Find the proportion of her laps that are completed between 127.32 and 128.45 seconds. c. The fastest 4% of laps are under d. The middle 50% of her laps are from seconds. seconds to seconds.
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