The income of a group of 5,000 persons were found to be normally distributed with mean = $ 9000and S.D.=7$750 What was the highest income among the poorest 200 and the lowest income amongthe richest 200? [Given: Area under the standard normal curve from Zz = 0 to Z=1.75 is0.46]

Answered: Image /qna-images/answer/2c712b12-7472-4c06-8771-2f8bf09e14f3.jpg

Answered: The income of a group of 5,000 persons…

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 the lengths of human pregnancies are normally distributed with μ = 266 days and o 16 days. Complete parts (a) and (b) below. (a) The figure to the right represents the normal curve with μ=266 days and o=16 days. The area to the left of X=230 is 0.0122. Provide two interpretations of this area. Provide one interpretation of the area using the given values. Select the correct choice below and fill in the answer boxes to complete your choice. (Type integers or decimals.) A. The proportion of human pregnancies that last less than 230 days is 0.0122 OB. The proportion of human pregnancies that last more than days is C Provide a second interpretation of the area using the given values. Select the correct choice below and fill in the answer boxes to complete your choice. (Type integers or decimals.) ⒸA. The probability that a randomly selected human pregnancy lasts less than OB. The probability that a randomly selected human pregnancy lasts more than days is days is A 230 268 Q
Determine the area under the standard normal curve that lies to the right of (a) Z=-1.54, (b) Z=0.26, (c) Z=1.97, and (d) Z= -0.42. Click here to view the standard normal distribution table (page 1). Click here to view the standard normal distribution table (page 2). (a) The area to the right of Z=-1.54 is (Round to four decimal places as needed.) ama
Which of the following percentile corresponds to the area beneath the standard normal curve from a z score of –1.00 to + 1.00?
Find the area to the left of x =24 under a normal distribution curve with u = 31 and o = 4.
Suppose the lengths of human pregnancies are normally distributed with μ = 266 days and o 16 days. Complete parts (a) and (b) below. (a) The figure to the right represents the normal curve with μ = 266 days and o=16 days. The area to the right of X = 290 is 0.0668. Provide two interpretations of this area. Provide one interpretation of the area using the given values. Select the correct choice below and fill in the answer boxes to complete your choice. (Type integers or decimals.) O A. The proportion of human pregnancies that last less than OB. The proportion of human pregnancies that last more than days is days is Provide a second interpretation of the area using the given values. Select the correct choice below and fill in the answer boxes to complete your choice. (Type integers or decimals.) O A. The probability that a randomly selected human pregnancy lasts more than OB. The probability that a randomly selected human pregnancy lasts less than days is days is or more than and days…
What percentage of the area under the normal curve is between the following z-scores? Z1= -2.39 Z2= 1.03
Determine the area under the standard normal curve that lies to the left of (a) Z= -0.42, (b) Z= -1.31, (c) Z= -1.74, and (d) Z= -1.22. Click the icon to view a table of areas under the normal curve. (a) The area to the left of Z= -0.42 is 0.3372. (Round to four decimal places as needed.) (b) The area to the left of Z= -1.31 is 0.0951. (Round to four decimal places as needed.) (c) The area to the left of Z= - 1.74 is 0.0409 . (Round to four decimal places as needed.) (d) The area to the left of Z= - 1.22 is (Round to four decimal places as needed.)
The weights of the chocolate in Hershey Kisses are normally distributed with a mean of 4.5338 g and a standard deviation of 0.1039 g. a. For the bell-shaped graph of the normal distribution of weights of Hershey Kisses, what is the area under the curve? b. What is the value of the median? a. For the bell-shaped graph of the normal distribution of weights of Hershey Kisses, what is the area under the curve? (Type an integer or a decimal. Do not round.) b. What is the value of the median? g (Round to four decimal places as needed.)

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The income of a group of 5,000 persons were found to be normally distributed with mean = $ 9000 and S.D.=7$750 What was the highest income among the poorest 200 and the lowest income among the richest 200? [Given: Area under the standard normal curve from Z = 0 to Z=1.75 is0.46]