I actually just learned this. I think this is the right answer.
Answer:
yes it is correct
Step-by-step explanation:
Answer:
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:

The information provided is as follows:

The critical value of <em>z</em> for 98% confidence level is,

Compute the 98% confidence interval for the true difference between testing averages for students using Method 1 and students using Method 2 as follows:


Thus, 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).
- Make sure your calculator is in "Deg" <em>(degrees)</em>.
- Input "32"
- Click on the "sin" button.
Answer: 0.5514
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Answer: tan θ
<u>Step-by-step explanation:</u>
cotθ * sin²θ * sec²θ
=
= tan
B is the answer I chose but there are the steps so you can see how to solve it