- A graphing or non-graphing, scientific calculator is required.
- You may use your handwritten course notes and your textbook.
- Your instructor will inform you if you can use additional materials.
- Do not use the internet or any computer software or application to help answer the questions.
- For decimal answers less than one, please type in the zero before the decimal point. Example: 0.07 instead of 07
- Each question has multiple parts, so you will see the same information on multiple problems. Example: Questions 1 through 5 all have the same prompt, but different things to do with that information.
1
1 point
Imagine you work for an airline and want to determine the proportion of flights that are more than 10 minutes late. You take a simple random sample of 177 flights and find that 12 of the flights are more than 10 minutes late. Use a \( 92 \% \) confidence level to estimate the proportion of late flights.
Find the appropriate critical value(s).
First Critical Value: \( \square \)
Second Critical Value: type your answer...
Note (1): If there are two critical values, enter the smaller one first.
Note (2): If there is just one critical value, enter NA for the second answer.
Note (3): Round to two decimal places.
2
1 point
Imagine you work for an airline and want to determine the proportion of flights that are more than 10 minutes late. You take a simple random sample of 177 flights and find that 12 of the flights are more than 10 minutes late. Use a \( 92 \% \) confidence level to estimate the proportion of late flights.
Sketch the distribution curve showing the area in the tails and the critical values.
Drag n'Drop here or Browse
