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mel-nik [20]
2 years ago
9

Brooke and Kaden each sold 15 boxes of cookies for $2.25 per box. How much

Mathematics
1 answer:
Sphinxa [80]2 years ago
8 0

Answer:

They sold 67.50 in total

Step-by-step explanation:

If each of them sold 15 boxes for 2.25 then both of them got 33.75 each then you add it and that gives you 67.50

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3 years ago
A professor records the difference between the marks scored by the students in the class test last week and those scored in the
dezoksy [38]

Answer: (10.82\ , 13.18)

Step-by-step explanation:

The confidence interval for population mean is given by :-

\mu\pm\ z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}

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Hence, the  99.9% confidence interval for the mean difference between the marks scored last week and marks scored this week by all the students = (10.82\ , 13.18)

4 0
3 years ago
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