1. Birth weights of babies in the United States can be modeled by a normal distribution with mean 3250 grams and standard deviation 550 grams. Those weighing less than 2500 grams are considered to be of low birth weight.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Question
The Normal Distribution on StatCrunch
1. Birth weights of babies in the United States can be modeled by a normal distribution with mean 3250
grams and standard deviation 550 grams. Those weighing less than 2500 grams are considered to be
of low birth weight.
Transcribed Image Text:The Normal Distribution on StatCrunch 1. Birth weights of babies in the United States can be modeled by a normal distribution with mean 3250 grams and standard deviation 550 grams. Those weighing less than 2500 grams are considered to be of low birth weight.
(f) Data from the National Vital Statistics Report indicate that there were 3,880,894 births in the
United States in 1997. A total of 291,154 babies were of low birth weight. Calculate the
observed proportion and comment on how well your normal calculation from part(c)
approximates this value.
(g) From the same 1997 report, a total of 2,552,852 babies weighed between 3000 and 4000 grams.
Calculate the observed proportion and comment on how well your normal calculation from
part(e) approximates this value.
The kh percentile of a distribution can also be found by using
STAT E Calculators E Normal
(h) How little would a baby have to weigh to be among the lightest 2.5% of all newborns?
Start by sketching the curve and shading the appropriate region.
(i) How much would a baby have to weigh to be among the heaviest 10% of all newborns?
Start by sketching the curve and shading the appropriate region.
Transcribed Image Text:(f) Data from the National Vital Statistics Report indicate that there were 3,880,894 births in the United States in 1997. A total of 291,154 babies were of low birth weight. Calculate the observed proportion and comment on how well your normal calculation from part(c) approximates this value. (g) From the same 1997 report, a total of 2,552,852 babies weighed between 3000 and 4000 grams. Calculate the observed proportion and comment on how well your normal calculation from part(e) approximates this value. The kh percentile of a distribution can also be found by using STAT E Calculators E Normal (h) How little would a baby have to weigh to be among the lightest 2.5% of all newborns? Start by sketching the curve and shading the appropriate region. (i) How much would a baby have to weigh to be among the heaviest 10% of all newborns? Start by sketching the curve and shading the appropriate region.
Expert Solution
Step 1

Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a time so we are answering the first three as you have not mentioned which of these you are looking for. Please re-submit the question separately for the remaining sub-parts.

trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 5 steps with 1 images

Blurred answer
Similar questions
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman