Suppose the age that children learn to walk is normally distributed with mean 13 months and standarddeviation 1.1 month. 15 randomly selected people were asked what age they learned to walk. Round allanswers to 4 decimal places where possible.a. What is the distribution of X? X - N(b. What is the distribution of ? ~ N(c. What is the probability that one randomly selected person learned to walk when the person wasbetween 11.5 and 14 months old?d. For the 15 people, find the probability that the average age that they learned to walk is between11.5 and 14 months old.e. For part d), is the assumption that the distribution is normal necessary? O Yes Nof. Find the IQR for the average first time walking age for groups of 15 people.Q1 =monthsQ3 =monthsIQR:months

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Answered: Suppose the age that children learn to…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Suppose that the speed at which cars go on the freeway is normally distributed with mean 80 mph and standard deviation 5 miles per hour. Let X be the speed for a randomly selected car. Round all answers to 4 decimal places where possible. a. What is the distribution of X? X- N b. If one car is randomly chosen, find the probability that it is traveling more than 76 mph. c. If one of the cars is randomly chosen, find the probability that it is traveling between 82 and 88 mph. d. 86% of all cars travel at least how fast on the freeway? mph. Submit Question
On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of 117 and a standard deviation of 14. Suppose one individual is randomly chosen. Let X = IQ of an individual.b. Find the probability that a randomly selected person's IQ is over 108. Round your answer to 4 decimal places.c. A school offers special services for all children in the bottom 6% for IQ scores. What is the highest IQ score a child can have and still receive special services? Round your answer to 2 decimal places.d. Find the Inter Quartile Range (IQR) for IQ scores. Round your answers to 2 decimal places.Q1: Q3: IQR:
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I keep ending up 76 and the answer is incorrect so how do I find the correct answer?
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Help with c ,d and f

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