It is if the sociologist can sample 100 woman the other paper is just so you understand where the question is coming from. anued from previous sampie:If the sociologist can sample 100 women, what will the margin of error be?PreviousNextype here to search近 Example Problems - Margin of ErrorSample Problems:Anytime you're trying to estimate a number from a population (like the average gas price in theStates), you include a margin of error. You need to accurately calculate the sample size needeparticular margin of error you want.A sociologist is interested in the average age women get married. The sociologist knows thatpopulation standard deviation of age at first marriage is three years for women and hasn't chathe last 60 years. The sociologist would like to demonstrate with 95% confidence that the methe first marriage for women.The following table provides the z*- values for selected (percentage) confidence levels.If.the sociologist can sample only_50 women, what willthe margin of error be?The formula for margin of error when estimating apopulation mean isPereestags CoddeseMOE +where z is the value from the table for a givenconfidence level (95 % in this case, or 1.96). o is thestandard deviation (3 years), and n is the samplesize (50). Now, substitute the numbers into theformula and solve:3 yearsMOF=1.96=t1.96 (0.4243 years)=10.83 yearsWith 50 women in the sample. the sociologist has a margin of error of plus/minus 0.83 years.ne beEto searchT1

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If the sociologist can sample 100 women, what will the margin of error be?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 7CR

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It is if the sociologist can sample 100 woman the other paper is just so you understand where the question is coming from.

anued from previous sampie:
If the sociologist can sample 100 women, what will the margin of error be?
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Example Problems - Margin of Error
Sample Problems:
Anytime you're trying to estimate a number from a population (like the average gas price in the
States), you include a margin of error. You need to accurately calculate the sample size neede
particular margin of error you want.
A sociologist is interested in the average age women get married. The sociologist knows that
population standard deviation of age at first marriage is three years for women and hasn't cha
the last 60 years. The sociologist would like to demonstrate with 95% confidence that the me
the first marriage for women.
The following table provides the z*- values for selected (percentage) confidence levels.
If.the sociologist can sample only_50 women, what will
the margin of error be?
The formula for margin of error when estimating a
population mean is
Pereestags Coddese
MOE +
where z is the value from the table for a given
confidence level (95 % in this case, or 1.96). o is the
standard deviation (3 years), and n is the sample
size (50). Now, substitute the numbers into the
formula and solve:
3 years
MOF=1.96
=t1.96 (0.4243 years)
=10.83 years
With 50 women in the sample. the sociologist has a margin of error of plus/minus 0.83 years.
ne beE
to search
T1

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