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 astandard deviation of 2.28 seconds. The distribution of her race times is normally distributed. We areinterested in one of her randomly selected laps. (Source: log book of Terri Vogel) Let X be the number ofseconds for a randomly selected lap. Round all answers to 4 decimal places where possible.a. What is the distribution of X? X NOb. Find the proportion of her laps that are completed between 127.32 and 128.45 seconds.c. The fastest 4% of laps are underd. The middle 50% of her laps are fromseconds.seconds toseconds.

Denote the random variable X as the number of seconds. Thus, X~ N (129.23, 2.28).

Answered: d. The middle 50% of her laps are from…

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

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

Section5.1: Logistic Functions

Problem 16E: Cable TV The following table shows the number C. in millions, of basic subscribers to cable TV in...

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Question

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.

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