Question
Find the confidence level and $\alpha$ fora. an $85 \%$ confidence interval.b. a $95 \%$ confidence interval.
Step 1
This is done by moving the decimal point two places to the left. For part a, the confidence interval is 85%. So, the confidence level is $0.85$. For part b, the confidence interval is 95%. So, the confidence level is $0.95$. Show more…
Show all steps
Your feedback will help us improve your experience
Ashley High and 68 other Intro Stats / AP Statistics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Find the confidence level and $\alpha$ for a. a $90 \%$ confidence interval. b. a $99 \%$ confidence interval.
Confidence Intervals for One Population Mean
Confidence Intervals for One Population Mean When $\sigma$ Is Known
Find the $95 \%$ confidence interval for $p_{A}-p_{B}$
Inferences Involving Two Populations
Inferences Concerning the Difference between Proportions Using Two Independent Samples
Find each. a. $z_{a / 2}$ for the $99 \%$ confidence interval b. $z_{\alpha / 2}$ for the $98 \%$ confidence interval c. $z_{a / 2}$ for the $95 \%$ confidence interval d. $z_{\alpha / 2}$ for the $90 \%$ confidence interval e. $z_{\alpha / 2}$ for the $94 \%$ confidence interval
Confidence Intervals and Sample Size
Confidence Intervals for the Mean When ? Is Known
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD