Your medical professor asks you to collect data from a lab samples to find out the percentage of these samples with chemical Ethyl acetate present. The Professor doesn't tell you anything else about estimates obtained last year not influence the results. You have access to a total of 2,525 samples and you need to determine how many need to be checked to be within three percent of the true percentage value using a ninety seven percent confidence interval.

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Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 400…

A: The objective of this question is to construct a 95% confidence interval for the proportion of adult…

Q: Two separate samples receive two different treatments. The first treatment group (N = 15) has a mean…

A: n1=15, x¯1=50, SS1=210n2=9, x¯2=56, SS2=190

Q: Many high school students take the AP tests in different subject areas. In one year, of the 144,140…

A: given data  n1 = 144140   x1 = 84545p^1 = x1n1 = 84545144140 = 0.5865 n2 = 216298    x2 = 126501p^2…

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A: Provided information: Number of adults in a survey = 1000 58% believed the driving age should be…

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Q: We wish to estimate what percent of adult residents in Ventura County like chocolate. Out of 500…

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Q: A federal report indicated that 17% of children under age 6 live in poverty in Nevada, an increase…

A: Given data, p=17%=0.17 E=2%=0.02 z-value at 99% confidence is Zc=2.576 n=?

Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 400…

A: Solution: It is given here:

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Q: If n=27, (x-bar)=34, and s=3, find the margin of error at a 90% confidence leve Give your answer to…

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Q: What is the impact of changing from the 95% confidence interval to the 90% confidence interval? The…

A: Confidence Interval Confidence Interval refers to the range of the value that we expect our estimate…

Q: I know how to do the first part, I am curious how to get the 95% confidence interval on part 6.

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Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 600…

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Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 100…

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Q: We wish to estimate what percent of adult residents in a certain county are parents. Out of 600…

A: Solution

Q: Your medical professor asks you to collect data from lab samples to find out the percentage of these…

A:

Q: lution is incorrect since the  confidence level is 90% margin of error is 3%

A: Given: Confidence level = 0.90 Margin of error (E) = 0.03 Assumed sample proportion  p^     = 0.50

Q: In 2009, 33% of Americans felt that one parent should stay home to raise the children instead of…

A: Given,n=1015x=416p^=xnp^=4161015=0.4099α=1-0.99=0.01α=0.01

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.