1. Given the following data, what is the lower bound of the confidence interval? Express your answer into 2 decimal places.

Mean = 85

Standard deviation = 20

Sample size = 100

Confidence level = 95%

2. Given the following data, what is the margin of error? Express your answer into 2 decimal places.

Mean = 85

Standard deviation = 20

Sample size = 100

Confidence level = 95%

3. Given the following data, what is the upper bound of the confidence interval? Express your answer into 2 decimal places.

Mean = 85

Standard deviation = 20

Sample size = 100

Confidence level = 95%