The lengths of time bank customers must wait for a teller are normally distributed, with a mean of 3 minutes and a standard deviation of 1.5 minute….

Quiz 1

Mean – 70.3

s – 12.85

***** my quiz 1 score was 96% or 48 out of 50

1 What was your score on Quiz 1? If it was 100, replace it with an 85.

2. Convert your Quiz 1 score to a z-score.  List your z-score.

3. What percentage of the class did better than you?