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ivanzaharov [21]

3 years ago

8

Amber's bank statement shows a closing balance of $224.13. There are no outstanding checks deposits. Her checkbook shows a balan

ce of $221.38. What might account for different balances?

2 answers:

Lina20 [59]3 years ago

4 0

Interest earned in the amount of $2.75

timofeeve [1]3 years ago

3 0

The interest earned amount of $2.75

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A sample was taken of the salaries of four employees from a large company. the following are their salaries, in thousands of dol

Free_Kalibri [48]

For given sample of salaries of four employees, the variance of their salaries is: 26 thousands of dollars

The formula for the variance is,

$S^2=\frac{\sum (x_i - \bar{x})^2}{n-1}$

where,

$S^2$ = sample variance

$x_i$ = the value of the one observation

$\bar{x}$ = the mean value of all observations

n = the number of observations

For given question,

n = 4

First we find the mean of their salaries.

(33 + 31 + 24 + 36 ) / 4 = 31

So, $\bar{x}=31$

Using the formula for variance ,

$S^2=\frac{(33-31)^2}{4-1}+\frac{(31-31)^2}{4-1}+\frac{(24-31)^2}{4-1}+\frac{(36-31)^2}{4-1}\\\\ S^2=\frac{4}{3} + \frac{0}{3} + \frac{49}{3} + \frac{25}{3} \\\\S^2= \frac{4+49+25}{3}\\\\S^2=\frac{78}{3} \\\\S^2=26$

Therefore, for given sample of salaries of four employees, the variance of their salaries is: 26 thousands of dollars

Learn more about the variance here:

brainly.com/question/13673183

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Which pair of triangles can be proven by congruent SAS? HELP ASAP

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Find the prime factorization

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remember
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Rewrite 5ab showing the multiplication signs

monitta

Answer:

$5ab = 5 \times a \times b$

Step-by-step explanation:

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