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NikAS [45]
3 years ago
14

Sample annual salaries (in thousands of dollars) for public elementary school teachers are listed. Find the sample standard devi

ation. Round to two decimal places if necessary
23.9
15.3
40.2
30.3
21.0
22.8
ID: ES6L 2.4.1-9+
Mathematics
1 answer:
faust18 [17]3 years ago
7 0

Answer:

The standard deviation is 9.34

Step-by-step explanation:

First we need to find mean of the sample:

m=(23.9+15.3+40.2+30.3+12+22.8)/6=24.08

Standard deviation will be like below:

d=\sqrt{(x-m^2)/6}=9.34

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The answer is: " 12 " .

_____________________________________________

→ " x = 12 " .

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To solve:

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to isolate "x" on one side of the equation; & to solve for "x" ;

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4 years ago
Use synthetic division to solve (x3 + 1) ÷ (x – 1). What is the quotient?
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Step-by-step explanation:

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