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Answers without the blur. Sign up and see all textbooks for free! Q 16.

Expert-verified Found in: Page 507 ### The Practice of Statistics for AP Examination

Book edition 6th
Author(s) Daren Starnes, Josh Tabor
Pages 837 pages
ISBN 9781319113339 # How confident? The figure shows the result of taking $25$ SRSs from a Normal population and constructing a confidence interval for the population mean using each sample. Which confidence level—$80%,90%,95%,\mathrm{or}99%$—do you think was used? Explain your reasoning. Confidence Level of $99%$ is used.

See the step by step solution

## Step 1: Given Information

We are given that ## Step 2: Determining Confidence Level Used

Confidence Level is calculated as $\frac{25}{25}=1$

$100%$

• Red line implies those sample means which have no true population mean.
• There are zero samples among given $25$ samples not containing true proportion.
• Hence, $25$ samples from $25$ samples has true population.
• The confidence level which is closest is $99%$ ### Want to see more solutions like these? 