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2 years ago

Translate each expression

Mathematics

1 answer:

melomori [17]2 years ago

4 0

Answer:

<em>Solving the first 6</em>
<em>Assumed the number is x</em>

4x - 1

(2/3)x + 7

m - n

x² - 9

2x/5

(1/4)x + 27

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A researcher compares the effectiveness of two different instructional methods for teaching electronics. A sample of 138 student

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The 98% confidence interval for the true difference between testing averages for students using Method 1 and students using Method 2 is (-8.04, 0.84).

Step-by-step explanation:

The (1 - <em>α</em>)% confidence interval for the difference between population means is:

$CI=(\bar x_{1}-\bar x_{2})\pm z_{\alpha/2}\times \sqrt{\frac{\sigma^{2}_{1}}{n_{1}}+\frac{\sigma^{2}_{2}}{n_{2}}}$

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Step-by-step explanation:

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We need 1 number to the left of the decimal

1.38 * 10^ something

We moved it 2 places to the right, that means our exponent is -2. If we had moved it to the left, our exponent would have been positive

1.38 * 10^ -2

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