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Find the 90% confidence interval

A random sample of 90 observations produced a mean that = 25.9 and a standard deviation s =2.4(a)Find a 95% confidence interval
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2. asked by Carol Harper
3. 676 views
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
Use the given degree of confidence and sample data to find a confidence interval for the population standard deviation σ.
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2. 65 views
Use the given degree of confidence and sample data to find a confidence interval for the population standard deviation σ.
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2. 88 views
Use the given degree of confidence and sample data to find a confidence interval for the population standard deviation σ.
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2. 68 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
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2. asked by Anonymous
3. 4,723 views
So if a confidence interval isn't the probability that you'll find the true mean in the confidence interval but the percentage
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2. asked by Bubbles
3. 190 views