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natita [175]
3 years ago
9

Estimate each product 3/4 times 23

Mathematics
1 answer:
storchak [24]3 years ago
6 0
We would have to convert 3/4 to a decimal of 0.75 (the equivalent)
0.75*23 = 17.3

-or-

3 * 23 = 69
4 * 23 = 92
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Answer:

A.

mean = 724.2

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B.

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C.

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Step-by-step explanation:

Number of samples n = 25

Summation X= 769 + 691 + 699 +730+711+ 765+ 702 718 +719 +712+ 768 +688 +757+695 768 +735 +709 +758 +708+ 693 +736 700+ 687 +772 +715 = 18105

A.

1. Mean = 18105/25

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2. Median is the middle value when arranged from the least value to the highest = 715

3. Mode is the number with the highest frequency = 768 (occured two times)

B.

1. Range = highest value - lowest value

Highest value = 772

Lowest value = 687

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2. Standard deviation = √(X-barX)²/n-1

= √20604/25-1

=√858.5

= 29.30

Please check attachment for the full calculation of the standard deviation

C.

Interval

[Mean - 2(sd), mean + 2(sd)]

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Step-by-step explanation:

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