You find that the average income for college students is $20,000 +/- $200 (with a confidence level of 95%). Indicate the CORRECT interpretation(s) of this finding below (you may select more than one).

a. I am 95% certain that the average income for college students is $20,000.
b. If the same sampling and statistical procedures are conducted 100 times the true population mean will be encompassed between $19,800 and $20,200 (and 5 times it will not).
c.5% of college students make less than $19,800.
d.95% of college students make more than $20,200.
e. I am 95% sure that the average income of college students is between $19,800 and $20,200.

(e) I am 95% sure that the average income of college students is between $19,800 and $20,200.

Step-by-step explanation:

Confidence interval is given by mean +/- margin of error.

95% confidence interval for the average income of college students is given as $20,000 +/- $200

From the above expression,

mean = $20,000

margin of error (E) = $200

Lower limit = mean - E = $20,000 - $200 = $19,800

Upper limit = mean + E = $20,000 + $200 = $20,200

This means that I am 95% confident that the average income of college students is between $19,800 (lower limit) and $20,200 (upper limit).

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step-by-step explanation:

9-15%

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.