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Mean plus or minus 1.95 SEM. Mean minus 1,95 SEM to Man plus 1,95 SEM.

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โˆ™ 2014-11-13 05:08:50
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What are the brain's association areas

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What are the brain's association areas

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How old is she is rebecca stevenson

When during pregnancy should one quit smoking

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Q: How do i construct a 99 confidence interval?
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Related questions

Is a 95 percent confidence interval for a mean wider than a 99 percent confidence interval?

No, it is not. A 99% confidence interval would be wider. Best regards, NS


If you have a 99 confidence interval what would your confidence level and alpha for it be?

Confidence level 99%, and alpha = 1%.


What is the Z value for 99 percent confidence interval estimation?

ss


Difference between 95 percent and 99 percent confidence interval?

4.04%


Which statistics are used to construct a confidence interval?

The parameters of the underlying distribution, plus the standard error of observation.


When the sample size and sample standard deviation remain the same a 99 percent confidence interval for a population mean will be narrower than the 95 percent confidence interval for the mean?

Never!


When population distribution is right skewed is the interval still valid?

You probably mean the confidence interval. When you construct a confidence interval it has a percentage coverage that is based on assumptions about the population distribution. If the population distribution is skewed there is reason to believe that (a) the statistics upon which the interval are based (namely the mean and standard deviation) might well be biased, and (b) the confidence interval will not accurately cover the population value as accurately or symmetrically as expected.


What happens to the confidence interval if you increase the confidence level?

The confidence interval becomes wider.


Why confidence interval useful?

Why confidence interval is useful


99 percent confidence interval Population mean 24.4 to 38.0 find the mean sample?

if the confidence interval is 24.4 to 38.0 than the average is the exact middle: 31.2, and the margin of error is 6.8


The width of a confidence interval is equal to twice the value of the margin of error?

No. The width of the confidence interval depends on the confidence level. The width of the confidence interval increases as the degree of confidence demanded from the statistical test increases.


What z value is associated with the 99 percent confidence interval?

2.326 (one sided) or 2.578 (two sided)


What Confidence interval is 0.05 alpha?

how are alpha and confidence interval related


What is the most controllable method of increasing the precision of or narrowing the confidence interval?

Confidence intervals represent an interval that is likely, at some confidence level, to contain the true population parameter of interest. Confidence interval is always qualified by a particular confidence level, expressed as a percentage. The end points of the confidence interval can also be referred to as confidence limits.


What happens to the confidence interval as the mean decreases?

The confidence interval is not directly related to the mean.


What happens to the confidence interval if you increase the sample size?

The confidence interval becomes smaller.


Is confidence interval and confidence limits are same thing?

no,these are not the same thing.The values at each end of the interval are called the confidence limits.


How do i construct a confidence interval?

Typically, the mean is the center and the interval extends a fixed number of standard-errors-of-the mean in wither direction. M+/- 1 SEM for example. I guess because you don't know, I should give you the simplest.


What does a confidence interval for a population mean constructed from sample data show?

A confidence interval of x% is an interval such that there is an x% probability that the true population mean lies within the interval.


Compute the population mean margin of error for a 99 percent confidence interval when sigma is 4 and the sample size is 36?

The mean plus or minus 2.576 (4/sqr.rt. 36)= 1.72 So take your average plus or minus 1.72 to get your confidence interval


What happens to the width of the confidence interval when you are unable to get a large sample size?

The width of the confidence interval increases.


If you have constructed the confidence interval 1200.058 1448.603 and the values are in thousands is it considered to be a good confidence interval or is it too large?

---- == ==


What is the Z value for 91 percent confidence interval estimation?

The Z-value for a one-sided 91% confidence interval is 1.34


How do you find The margin of error for the confidence interval is?

Generally speaking an x% confidence interval has a margin of error of (100-x)%.


Is it better to have a wide confidence interval or a narrow confidence interval?

Narrow because there is less of a chance for people to mess up