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lord [1]
3 years ago
5

Bob recorded the number of hours each person watched TV in a week. He then organized the information in a frequency table.​

Mathematics
1 answer:
seraphim [82]3 years ago
6 0

Answer:

yque   ha haceqr ailluey

Step-by-step explanation:

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marishachu [46]
The sum of all the measurements is just the average times the number.

\bar x = \frac{1}{n} \sum_{i=1}^n x_i

\sum_{i=1}^n x_i = n \bar x

So if the average of all 92 is 7 the sum of those is 92 \times 7

The average of the last two is 7.2 so their sum is 2 \times 7.2

That means the sum of the first 90 is 92 \times 7 - 2 \times 7.2

so the average of the first 90 is

 \dfrac{92 \times 7 - 2 \times 7.2}{90} = 6.99556 cm



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allsm [11]

Answer:

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Katena32 [7]

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F(x) = x + 13, then evaluate f(-2)
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