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2 years ago

MATH 1) On a piece of paper, use a protractor to construct a triangle with angle measures of 50° and 70º.

Mathematics

2 answers:

nataly862011 [7]2 years ago

8 0

60 degrees. All angles add up to 180 degrees.

Olegator [25]2 years ago

6 0

50+70=120
180-120=60
60 is the measure of the 3rd angle

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kompoz [17]

Answer:

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Step-by-step explanation:

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3 years ago

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3 years ago

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Elza [17]

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2 years ago

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kotegsom [21]

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3 years ago

The class sizes of elementary school classes in a public school district are normally distributed with an unknown population mea

weqwewe [10]

Answer: $(17.14,\ 22.86)$

Step-by-step explanation:

The confidence interval estimate for the population mean is given by :-

$\overline{x}\pm ME$ , where $\overline{x}$ is the sample mean and ME is the margin of error.

Given : Sample mean: $\overline{x}=20$

The margin of error for a 98% confidence interval estimate for the population mean using the Student's t-distribution : $ME=2.86$

Now, the confidence interval estimate for the population mean will be :-

$20\pm2.86=(20-2.86,\ 20+2.86)=(17.14,\ 22.86)$

Hence, the 98% confidence interval estimate for the population mean using the Student's t-distribution = $(17.14,\ 22.86)$

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3 years ago