The value of 2xSD, which represents half the width of the confidence interval, i

Question

The value of 2xSD, which represents half the width of the confidence interval, is called the

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The equation for the standard error of the statistic (sample proportion) is

Question 3 options:

uses the parameter value, pi.

the same as the standard deviation of the statistic

uses the sample statistic, phat.

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he most common confidence levels are

Question 4 options:

95%

99%

50%

90%

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To find a confidence interval we use the following equation: statistic +/- margin of error.  

Question 5 options:

uses the parameter value, pi.

the same as the standard deviation of the statistic

uses the sample statistic, phat.

_-------

he most common confidence levels are

Question 4 options:

95%

99%

50%

90%

___-----

To find a confidence interval we use the following equation: statistic +/- margin of error.  

Question 5 options:

True False

Explanation / Answer

3) The equation for standard error of statistic (sample proportion) uses the sample statistic Phat.

p or P is the actual probability of an event and P-hat is the value calculated from a sample observation.

4) The most common confidence level is 95%. Confidence levels range from 80% to 99%, with most common CL being 95%.

5) True, The range of the confidence interval is defined by the sample statistic + margin of error. And the uncertainty is denoted by the confidence level.

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