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
#SPJ1
In its normal way, For example: 214, Write it in the way it is Usually written.
Answer:
Answer D is the correct answer 4x+1
Bcfvn. BBC bmbbc. B b vhjvchxcj church. Hvhvychbycycbffjctccycycvidycgdfrghfdhfhfhfgkepfgogigugbhvgvyvjvufbinibunobinib k hvugycvbjjvuvcubjch gju furyfucfyfjcufrdifjfcjj