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3 years ago

What is the difference 8-8?

Mathematics

2 answers:

Lena [83]3 years ago

4 0

The answer would be 0 because 8 taken away from 8 is 0. Hope this helps! ^_^

sergejj [24]3 years ago

3 0

The other day is going well and I'll let you know if you are going out with your grandma tomorrow morning or tomorrow night but I'm still at work house for the surgery next year

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A researcher asks students to rate their feeling toward an increase in tuition on a seven-point scale ranging from "opposed" to

ElenaW [278]

Answer: B

Step-by-step explanation:

In statistical terms ,ordinal scale contains things that you can place in order.

For example, hottest to coldest, lightest to heaviest, richest to poorest. Basically, if you can rank data by 1st, 2nd, 3rd place (and so on), then you have data that’s on an ordinal scale.

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2 years ago

HELP ASAP PLEASE!!!!!

Musya8 [376]

The rule for inscribed angles and their corresponding arcs is that the measure of the angle is one-half that of the arc. Therefore, all we have to do is divide 68/2, which gets us an answer of D. 34.

Hope this helps!

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3 years ago

6 The manufacturer of an oven states that the

Len [333]

Result, Rachel can be certain that the temperature is suitable for her cake.

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3 years ago

A clinical trial was conducted to test the effectiveness of the drug zopiclone for treating insomnia in older subjects. Before t

aleksklad [387]

Answer:

We cannot say that the mean wake time are different before and after the treatment, with 98% certainty. So the zopiclone doesn't appear to be effective.

Step-by-step explanation:

The goal of this analysis is to determine if the mean wake time before the treatment is statistically significant. The question informed us the mean wake time before and after the treatment, the number of subjects and the standard deviation of the sample after treatment. So using the formula, we can calculate the confidence interval as following:

$IC[\mu ; 98\%] = \overline{y} \pm t_{0.99,n-1}\sqrt{\frac{Var(y)}{n}}$

Knowing that $t_{0.99,15} = 2.602$ :

$IC[\mu ; 98\%] = 98.9 \pm 2.602\frac{42.3}{4} \Rightarrow 98.9 \pm 27.516$

$IC[\mu ; 98\%] = [71.387 ; 126,416]$

Note that $102.8 \in [71.384 ; 126.416]$ so we cannot say, with 98% confidence, that the mean wake time before treatment is different than the mean wake time after treatment. So the zopiclone doesn't appear to be effective.

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2 years ago

Tom drove 130 Miles at the speed of 65 mph, and then 200 more miles at the speed of 30 mph. What was his average speed for the e

ch4aika [34]

47.5 mph- because 30+65 equals 95 and 95 divided by 2 is 47.5

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3 years ago