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ad-work [718]
3 years ago
14

PLEASE HELPPPPPPP!!!!!!

Mathematics
1 answer:
Ksju [112]3 years ago
5 0
A. An angle and its supplement equals 180∘ . So subtract 55∘ from 180∘ to get the supplemental angle.

B. The supplement of 170 degrees is 180-170 = 10 degrees. The complement of 55 is 90 - 55.

sorry i don't know the number to C, but i hope i helped a little <3
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The 95% confidence interval for the population mean weight of newborn elephants is between 242.12 pounds and 245.88 pounds.

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We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1-0.95}{2} = 0.025

Now, we have to find z in the Ztable as such z has a pvalue of 1-\alpha.

So it is z with a pvalue of 1-0.025 = 0.975, so z = 1.96

Now, find M as such

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The lower end of the interval is the sample mean subtracted by M. So it is 244 - 1.88 = 242.12 pounds.

The upper end of the interval is the sample mean added to M. So it is 244 + 1.88 = 245.88 pounds

The 95% confidence interval for the population mean weight of newborn elephants is between 242.12 pounds and 245.88 pounds.

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