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Crank
3 years ago
11

How to solve this please?

Mathematics
1 answer:
Alisiya [41]3 years ago
6 0
Simplifying in the bracket first then following the rules of operations-4+8-[16x1+4]
-4+8-[20]
-16
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Considering the situation described, we have that:

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<h3>What are the hypotheses tested?</h3>

At the null hypotheses, it is tested if the mean has not been reduced, that is, it still is of 5.2 hours, hence:

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More can be learned about hypotheses tests at brainly.com/question/26454209

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