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SVEN [57.7K]
2 years ago
10

Wite a numerical expression for the below problems. Simplify the expressions.

Mathematics
1 answer:
ziro4ka [17]2 years ago
4 0

Answer:

1) 9

2) 34

Step-by-step explanation:

For the first one, it would be

= (6×3)/2

= 18/2

= 9

The second one is,

= 36- (12/6)

= 36 - 2

= 34

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Using the z-distribution, it is found that the 95% confidence interval for the difference is (-1.3, -0.7).

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The mean is the subtraction of the means, hence:

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s = \sqrt{s_S^2 + s_N^2} = \sqrt{0.1285^2 + 0.0973^2} = 0.1612

<h3>What is the confidence interval?</h3>

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We have a 95% confidence interval, hence the critical value is of z = 1.96.

Then, the bounds of the interval are given as follows:

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More can be learned about the z-distribution at brainly.com/question/25890103

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