Answer:
23.5, 23, 13, 12.5
Step-by-step explanation:
Using the z-distribution, it is found that the 95% confidence interval for the difference is (-1.3, -0.7).
<h3>What are the mean and the standard error for each sample?</h3>
Considering the data given:


<h3>What is the mean and the standard error for the distribution of differences?</h3>
The mean is the subtraction of the means, hence:

The standard error is the square root of the sum of the variances of each sample, hence:

<h3>What is the confidence interval?</h3>
It is given by:

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:
More can be learned about the z-distribution at brainly.com/question/25890103
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Answer:
12 meters
Step-by-step explanation:
2x9=18 (get both widths)
42-18=24 (take away widths of 9m)
24/2=12 (divide by 2 to get one length)
1a. x = 70
Alternate Interior Angles
1b. x = 120
Alternate Interior Angles
1c. x = 110
Corresponding Angles
2a. x = 100
Alternate Interior Angles
y = 80
Supplementary Angles (with x)
2b. x = 75
Corresponding Angles
y = 105
Supplementary Angles (with x)
2c. x = 70
Same-Side Interior Angles
y = 110
Supplementary Angles (with x)
Try the rest on your own!