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Confidence interval Concept Check 1

Which of the following descriptions of confidence intervals is correct? (Select all that apply)a. If a 95% confidence interval
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2. asked by Lindsay
3. 1,633 views
A researcher constructs a confidence interval for a population proportion using a sample of size 50. The value of p is.3, and
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2. 78 views
A researcher constructs a confidence interval for a population proportion using a sample of size 50. The value of is .3, and the
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2. asked by John maddy
3. 299 views
We have calculated a 95% confidence interval for a proportion and would prefer the confidence interval to be more precise, that
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2. asked by Nick
3. 662 views
A confidence interval for a population mean has a margin of error of 3.1.a)Determine the length of the confidence interval. b)If
1. 2 answers
2. asked by Anonymous
3. 4,723 views
A student was asked to find a 99% confidence interval for widget width using data from a random sample of size n = 23. Which of
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2. 78 views
In a random sample of 78 teenagers, 32 admit to texting while driving. Construct a 98% confidence interval for the percentage of
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2. asked by MELISSA
3. 648 views
A simple CILet θ be an unknown parameter, and let X be uniform on the interval [θ−0.5,θ+0.5]. Is [X−2,X+2] an 80%
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2. asked by SK
3. 3,941 views
What is the value of the parameter for which we constructed those confidence intervals?9 5 % confidence interval for Lower bound
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2. 23 views
Confidence interval Concept Check1 point possible (graded) As in the previous section, let X1,…,Xn∼iidexp(λ) . Let
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2. asked by Sammu
3. 723 views