Construct the indicated confidence interval for the difference between population proportions p1 - p2. Assume that the samples are independent and that they have been randomly selected. In a random sample of 500 people aged 20-24, 22% were smokers. In a random sample of 450 people aged 25-29, 14% were smokers. Construct a 95% confidence interval for the differencebetween the population proportions p1 - p2.

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Q: Find the value of t a/2 for a 99% confidence interval when the sample size is 30

A: Given Confidence = 99% n=30

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Q: If n=400 and X=100​, construct a 95​% confidence interval estimate for the population proportion.

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Q: Use the given confidence interval to find the margin of error and the sample proportion. (0.704,…

A: The confidence interval for population proportion is given by (0.704, 0.732)

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A: The difference is, x y Difference(x-y) 5.1 4.7 0.4 5.0 3.9 1.1 4.6 4.1 0.5 3.5 4.2 -0.7…

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A: Solution: Given information: n= 30 Sample size  x = ∑xn=18830=6.2667 Sample mean σ= 1.9 Population…

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A: According to the given information in this question  We need to find margin of error

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A: Given data,n=100x=22σ=3z-value at 95% confidence is Zc=1.96

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Q: Use the given confidence interval to find the margin of error and the sample mean. (15.3,22.3)

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A: In the above question, we are given,  a confidence interval is

Q: Use the given confidence interval to find the margin of error and the sample mean . (12.9, 20.1)

A: See the handwritten solution

Q: Use the given confidence interval to find the population proportion margin of error. 0.54<p<0.68

A: Given: 0.54&lt;p&lt;0.68 To find: Margin of error

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Q: Suppose that a 95% confidence interval for a population p = the population proportion of men who…

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Q: (a) What is the point estimate of the difference between the two population proportions? (b) Develop…

A: (a) The point estimate of the difference between the two population proportions is,…

Q: Determine the margin of error for the confidence interval for the proportion: 0.575 <p<0.722

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Q: The amounts (in ounces) of juice in eight randomly selected juice bottles are: 15.4  15  15.7  16…

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A: Introduction: The 100 (1 – α) % confidence interval for the population proportion, p is: Here, n is…

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Q: Find and interpret the 95% confidence interval for μ, if ¯y = 70 and s = 10, based on a sample size…

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Q: Use the given confidence interval to find the margin of error and the sample mean.  (4.81, 8.09)

A: The confidence interval is given by (4.81, 8.09)

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A: We have to find margin of error

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Q: he Pew Social Media Update 2014 surveyed 1,597 adult internet users on which social media websites…

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Q: If x̄=89​, σ=13​, and n=70​, construct a 95​% confidence interval estimate of the population​ mean,…

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Q: Hi. How do you calculate this problem? Is there a way to do this on a TI-83? Thanks.

A: Note:Hi, we are solving this problem with manual calculations. Thank you.

Q: How many subjects would be needed to ensure that a 95% confidence interval estimate of BMI had a…

A: Given data set is28,21,37,38,24,28,38,47,27,32,36,43sample size(n)=12confidence level=95%Margin of…

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A: True

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A: There are only 5 values in the sample data. Scores: 18 13 12 15 12

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Q: Use the given confidence interval to find the margin of error and the sample mean. (13.5,21.9)

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Q: An economist at the Florida Department of Labor and Employment needs to estimate the unemployment…

A: Givenp^=0.46sample size(n)=529

Q: If n=420 and ˆpp^ (p-hat) =0.19, find the margin of error at a 95% confidence level

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Q: In a survey of 900 adults, 240 said that they watched the World Cup final on television. Using these…

A: Given, The sample proportion is,

Q: Use the given confidence interval to find the population proportion margin of error. 0.25< P <0.53

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Q: on the data she gathers. Which one of the following combinations of sample size and confidence level…

A: here AS PER GUIDELINES I HAVE CALCULATED FIRST MAIN QUESTION , AS YOU HAVE POSTED MULTIPLE DIFFRENT…