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cluponka [151]
3 years ago
9

Preciso de ajuda na questao 1:

Mathematics
1 answer:
Helen [10]3 years ago
7 0

Answer:

cxc joy

Step-by-step explanation:

jouning

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How will the federal tax affect a gross biweekly pay of $740 for a single person claiming 1 exemption?
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Sorry this is late but for anyone who still needs it the answer is D. It decreases gross pay by $65.

I just had this on my test, hope it helps :)

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-7^-2<br>does anyone know ?
Leno4ka [110]

Negative exponents mean that you flip the number upside down

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3 years ago
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The distribution of income tax refunds follow an approximate normal distribution with a mean of $7010 and a standard deviation o
Andrej [43]

Answer:

A refund must be above $7,139 before it is audited.

Step-by-step explanation:

The Empirical Rule states that, for a normally distributed random variable:

Approximately 68% of the measures are within 1 standard deviation of the mean.

Approximately 95% of the measures are within 2 standard deviations of the mean.

Approximately 99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we have that:

Mean = 7010, standard deviation = 43.

Approximately 99.7% of the measures are within 3 standard deviations of the mean.

The empirical rule is symmetric, which means that the lowest (100-99.7)/2 = 0.15% is at least 3 standard deviations below the mean, and the upper 0.15% is at least 3 standard deviations above the mean.

Use the Empirical Rule to determine approximately above what dollar value must a refund be before it is audited.

3 standard deviations above the mean, so:

7010 + 3*43 = 7139.

A refund must be above $7,139 before it is audited.

5 0
2 years ago
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