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Leya [2.2K]
3 years ago
12

The sum of a number, n, and a number 5 larger than it is 41.

Mathematics
1 answer:
lina2011 [118]3 years ago
8 0

Answer:

36

Step-by-step explanation:

If you set the equation up, it would be n + 5 = 41. If you subtract the 5 from both sides to get n by itself, you get n = 36.

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3 years ago
The age of some lecturers are 42,54,50,54,50,42,46,46,48 and 48 calculate the mean age and standard deviation
rjkz [21]

Answer:

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Standard deviation: 4

Step-by-step explanation:

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= 42 + 54 + 50 + 54 + 50 + 42 + 46 + 46 + 48+ 48/ 10

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b) Standard deviation

The formula for Standard deviation =

√(x - Mean)²/n

Where n = number of terms

Standard deviation =

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= √-6² + 6² + 2² + 6² + 2² + -6² + -2² + -2² + 0² + 0²/10

=√36 + 36 + 4 + 36 + 4 + 36 + 4 + 4 + 0 + 0/ 10

=√160/10

= √16

= 4

The standard deviation of the ages is 4

3 0
3 years ago
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