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The confidence interval becomes wider.

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โˆ™ 2011-12-04 12:33:15
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Q: What happens to the confidence interval if you increase the confidence level?
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Related questions

What Happens To The Width Of The Confidence Interval If You Decrease The Confidence Level Decrease The Sample Size or Decrease the margin of error?

The width of the confidence interval willdecrease if you decrease the confidence level,increase if you decrease the sample sizeincrease if you decrease the margin of error.


What happens to the width of the confidence interval if you decrease the confidence level?

The width reduces.


What happens to interval when level of confidence is increased?

it increases


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 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.


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 confidence associated with an interval estimate is called the?

confidence level


True or False The higher the confidence level the narrower the confidence interval?

True.


What is Confidence Intervals of Degree of Confidence?

, the desired probabilistic level at which the obtained interval will contain the population parameter.


What is the confidence interval for 85 percent?

it would be with a level of significance of 0.15.


What would happen to the width of the confidence interval if the level of confidence is lowered from 95 percent to 90 percent?

decrease


What is the Z score for a confidence level of 0.01?

The answer depends on whether the confidence interval is one sided or two sided.


What is meant by a 95 percent confidence interval?

Confidence IntervalsConfidence interval (CI) is a parameter with a degree of confidence. Thus, 95 % CI means parameter with 95 % of confidence level. The most commonly used is 95 % confidence interval.Confidence intervals for means and proportions are calculated as follows:point estimate ± margin of error.


What z value corresponds to a confidnece level of 86?

The value for a one-sided confidence interval of 86% is 1.08


What is the critical z value that corresponds to a confidence level of 92 percent?

It depends on whether the interval is one sided or two sided. The critical value for a 2-sided interval is 1.75


What are the advantages of a small confidence interval in statistics?

The smaller the confidence interval, the more certain you are of the answers. Remember confidence level and confidence interval (margin of error) are 2 separate things. So if you are using an industry standard confidence level of 95% and 5% margin of error in a standard statistical table, then you could say, for example, with 95% certainty that 60% of those polled would vote for John McCain. Another way of saying this is even though you did not poll everyone (if you did, it would then become a very expensive census), you can say with a high degree of certainty (95% certainty) that 55% to 65% of those polled will vote for Johnny (sadly).


What Z value corresponds to a confidence level of 98 percent?

The answer depends on whether the interval is one-sided or two-sided and, if two-sided, whether or not it is symmetrical.


Why does the margin of error increase as the confidence increases?

The margin of error is dependent on the confidence interval.I'll give you examples to understand it better.We know:Confidence Interval (CI) = x(bar) ± margin of error (MOE)MOE = (z confidence)(sigma sub x bar, aka standard error of mean)When CI = 95%, MOE = (1.96)(sigma sub x bar)When CI = 90%, MOE = (1.64)(sigma sub x bar)Naturally, the margin of error will decrease as confidence level decreases.


What happens if mercury level increase in your body?

You die.


What confidence level has become the most used or traditional confidence level among business researchers?

95% confidence level is most popular


As standard deviation increases what happens to the sample size in order to achieve a specified level of confidence?

decreases


What happens at the molecular level when NaOH dissolves in HCl?

Increase


Confidence level and significance level?

I have always been careless about the use of the terms "significance level" and "confidence level", in the sense of whether I say I am using a 5% significance level or a 5% confidence level in a statistical test. I would use either one in conversation to mean that if the test were repeated 100 times, my best estimate would be that the test would wrongly reject the null hypothesis 5 times even if the null hypothesis were true. (On the other hand, a 95% confidence interval would be one which we'd expect to contain the true level with probability .95.) I see, though, that web definitions always would have me say that I reject the null at the 5% significance level or with a 95% confidence level. Dismayed, I tried looking up economics articles to see if my usage was entirely idiosyncratic. I found that I was half wrong. Searching over the American Economic Review for 1980-2003 for "5-percent confidence level" and similar terms, I found: 2 cases of 95-percent significance level 27 cases of 5% significance level 4 cases of 10% confidence level 6 cases of 90% confidence level Thus, the web definition is what economists use about 97% of the time for significance level, and about 60% of the time for confidence level. Moreover, most economists use "significance level" for tests, not "confidence level".


What is the critical z value that corresponds to a confidence level of 88 percent?

z = 1.56 gives a 2-tailed interval for 88%.z = 1.56 gives a 2-tailed interval for 88%.z = 1.56 gives a 2-tailed interval for 88%.z = 1.56 gives a 2-tailed interval for 88%.


Can more types of calculations be performed at a nominal level than an interval level?

No. The interval level is more refined and so enables calculations which are not available at the nominal level.

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