3 years ago

How many ways can an IRS auditor select 3 of 9 tax returns for an audit?

Mathematics

1 answer:

Olegator [25]3 years ago

8 0

Answer:

84ways

Step-by-step explanation:

This is a problem on combination. Combination has to do with selection. For example if r objects are to be selected from a pool of n objects, this can be done in nCr ways.

nCr = n!/(n-r)!r!

9C3= 9!/(9-3)!3!

9C3= 9!/(6)!3*2*1

9C3= 9*8*7*6!/(6)!6

9C3= 9*8*7*/6

9C3= 504/6

9C3= 84ways

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Step-by-step explanation:

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Answer:

60% or 0.6

Step-by-step explanation:

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2 years ago

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Step-by-step explanation

The formula that I used

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3 years ago

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29. Family income in the middle class: Bauer et al. (2011) identified the median income of a middle-class family in their sample

GREYUIT [131]

Answer:

No it is not

Step-by-step explanation:

The median is 84200

The mean is 85300

Low income is 65100

High income is 103400

From this information, we can see a skewed data. The mean would not be a good estimate value. Rather the center (median) would be more appropriate.

When we calculate the middle value for this data

65100+103400 = 168500/2 = 84250

84250 is closer to the median score of 84200. The median is best in the presence of outliers.

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2 years ago