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wolverine [178]
3 years ago
12

HELPPPPP ME PLEASE!!!!

Mathematics
2 answers:
Rufina [12.5K]3 years ago
6 0

Answer:

this is tough

Step-by-step explanation:

Rzqust [24]3 years ago
5 0

Answer:

100 degrees

Step-by-step explanation:

The three angles inside a triangle always add up to 180

so, 180-43-57 is 80

But that's the angle inside the triangle. notice that that angle (ACD) and BCA make a straight line.  That means they add up to 180. Therefore, 180-80=100 degrees.

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Each year, all final year students take a mathematics exam. It is hypothesized that the population mean score for this test is 8
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Answer:

95% Confidence interval:  (96.06,103.94)

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 85

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z_{critical}\text{ at}~\alpha_{0.05} = 1.96

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(96.06,103.94) is the 95% confidence interval for  the population mean test score.

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A.

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