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find the 90% confidence interval

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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
1. 1 answer
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
1. 1 answer
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
1. 3 answers
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
1. 0 answers
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.
1. 1 answer
2. 65 views
Use the given degree of confidence and sample data to find a confidence interval for the population standard deviation σ.
1. 1 answer
2. 87 views
Use the given degree of confidence and sample data to find a confidence interval for the population standard deviation σ.
1. 1 answer
2. 68 views
We have calculated a 95% confidence interval for a proportion and would prefer the confidence interval to be more precise, that
1. 1 answer
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
So if a confidence interval isn't the probability that you'll find the true mean in the confidence interval but the percentage
1. 2 answers
2. asked by Bubbles
3. 190 views

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