Confidence interval with t Quiz

Name: ______________________   Date: __________   Score: ____ / 10

10 questions. Calculator allowed. Show your working. steplyclass.com/university-statistics/confidence-interval-with-t/quiz/

1. 1

   95% confidence interval: sample mean 50, sample sd 8, n 16

   Answer: ____________________

2. 2

   95% confidence interval: sample mean 12, sample sd 3, n 9

   Answer: ____________________

3. 3

   90% confidence interval: sample mean 30, sample sd 4, n 16

   Answer: ____________________

4. 4

   95% confidence interval: sample mean 18, sample sd 2, n 4

   Answer: ____________________

5. 5

   98% confidence interval: sample mean 100, sample sd 12, n 9

   Answer: ____________________

6. 6

   99% confidence interval: sample mean 22, sample sd 4, n 16

   Answer: ____________________

7. 7

   95% confidence interval: sample mean 140, sample sd 18, n 4

   Answer: ____________________

8. 8

   95% confidence interval: sample mean 4.2, sample sd 0.9, n 10

   Answer: ____________________

9. 9

   99% confidence interval: sample mean 15, sample sd 2.5, n 20

   Answer: ____________________

10. 10

    98% confidence interval: sample mean 9, sample sd 1.5, n 15

    Answer: ____________________