On a planet far far away from Earth, IQ of the ruling species is normally distributed with a mean of 114 anda standard deviation of 16. Suppose one individual is randomly chosen. Let X = IQ of an individual.a. What is the distribution of X? X - N(b. Find the probability that a randomly selected person's IQ is over 112.to 4 decimal places.Round your answerc. A school offers special services for all children in the bottom 6% for IQ scores. What is the highest IQscore a child can have and still receive special services?Round your answer to 2 decimalplaces.d. Find the Inter Quartile Range (IQR) for IQ scores. Round your answers to 2 decimal places.Q1:Q3:IQR:

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Answered: On a planet far far away from Earth, IQ…

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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Refer to the accompanying table, which describes results from groups of 8 births from 8 different sets of parents. The random variable x represents the number of girls among 8 children. Find the mean and standard deviation for the number of girls in 8 births. Click the icon to view the data table. The mean is u= girl(s). (Round to one decimal place as needed.) The standard deviation is o = e# girl(s). (Round to one decimal place as needed.) Table of numbers of girls and probabilities Number of Girls x 0 1 2 3 4 5 6 7 8 átv P(x) 0.004 0.034 0.117 0.218 0.278 0.217 0.102 0.027 0.003 D - X NiZ Next
The average number of kilos of meat a person consumes in a year is 90 kilos. Assume that the standard deviation is 10 kilos and the distribution is approximately normal. If a sample of 45 individuals is selected, find the probability that the mean of the sample will be 87 kilos or greater per year. Express your answer in percent form with 2 decimal places (with percent symbol - e.g. 10.00%) type your answer...
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K The lengths of pregnancies are normally distributed with a mean of 269 days and a standard deviation of 15 days. a. Find the probability of a pregnancy lasting 308 days or longer. b. If the length of pregnancy is in the lowest 3%, then the baby is premature. Find the length that separates premature babies from those who are not premature. Click to view page 1 of the table. Click to view page 2 of the table. a. The probability that a pregnancy will last 308 days or longer is (Round to four decimal places as needed.) b. Babies who are born on or before (Round to the nearest integer as needed.) days are considered premature. .
The average number of kilos of meat a person consumes in a year is 100 kilos. Assume that the standard deviation is 11 kilos and the distribution is approximately normal. If a sample of 40 individuals is selected, find the probability that the mean of the sample will be 105 kilos or greater per year. Express your answer in percent form with 2 decimal places (with the percent symbol - e.g. 10.00%). type your answer... Next
The tourist bureau of the Caribbean Islands surveyed a sample of 5 United States tourists as they left to return home. The tourists were asked how many days they spent on their visits. Their responses were as follows. 9, 10, 8, 4, 9 Send data to calculator Find the standard deviation of this sample of numbers. Round your answer to two decimal places. X
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A sample of n = 10 scores has a mean of 20. A person with a score of 1 is replaced with a person who has a score of 31. Find the new mean. a.31 b.17 c.21 d.23
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 P6, the 6th percentile. This is the bone density score separating the bottom 6% from the top 94%. Which graph represents Pg? Choose the correct graph below. OA. O B. OD. Q P8

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