If the variance of the "number of daily parking tickets issued is 100, the standard deviation is defined as the

1 answer:

4 0

<span>Generally according to mathematical formulas the standard deviation is defined as the square root of the variance.Same formula applied to this question where variance is 100 which results that standard deviation is 10.Whereas variance is the square of the standard deviation which is 100 derived in the question.</span>

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On a test, Shoshana got 65% or 23.4 of the items correct? How many items were on the test?

Marizza181 [45]

65 % ------------------ 23.4 items
100 % ----------------- x items
65 : 100 = 23.4 : x
65 x = 100 * 23.4
65 x = 2340
x = 2340 : 65
x = 36
Answer: there were 36 items on the test.

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2 years ago

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