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svetoff [14.1K]
3 years ago
5

Solve please. Just give the answer plz!

Mathematics
2 answers:
zzz [600]3 years ago
7 0

Answer:

0.5 or 1/2 of an hour

Step-by-step explanation:

3/10 + 1/5

1/5 is equivalent to 2/10

3/10 + 2/10 = 5/10

5/10 is equivalent to 1/2

Studentka2010 [4]3 years ago
5 0

Answer:

I think the answer is 6 hours. I'm not sure though

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Please help 20 points!!!!!
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Three students want to estimate the mean backpack weight of their schoolmates. To do this, they each randomly chose 8 schoolmates and weighed their backpacks. Then as per the given sample data,

(a) The sample means of the backpacks are: 6.375,6.375,6.625

(b) Range of sample means: 0.25

(c)The true statement is: The closer the range of the sample means is to 0, the less confident they can be in their estimate.

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For the second sample, mean= 6.375

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The students will estimate the average backpack weight of their classmates using sample means, the true statement is:

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Learn more about range here:

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