Question

Results of a poll stated that 40% of U.S. adults identify as Republican, and you want to test the claim at alpha = 0.05. What level of confidence should you use? (Answer to two decimal places, e.g., 0.75).

Answer 1

The confidence level is 95% or 0.95.

Explanation:

Consider the provided information.

Results of a poll stated that 40% of U.S.

If you want to test the claim at alpha = 0.05.

As we know:

Confidence level = 1 - significance level (
`\alpha`)

Confidence level =
`1 - 0.05`

Confidence level =
`0.95`

Therefore, the confidence level is 95% or 0.95.