#1: 68% of the weight of a certain city's population is between 60kg and 80kg.

1. What is the mean weight?
2. What is one standard deviation?
3. What does being within two standard deviations mean for the data?

#2: What is the score at one standard deviation if 99.6% of scores are between 94 and 70?

b. 95% of the students are between what scores?

#3:68% of eggs weigh between 39g and 43g. What would the weight have to be to cover 95%?

#4:99.6% of a group of people has an age between 16 and 28.What would the age range have to be to cover 95% of the group?