Survey Question:

How many times, if any, has someone used cell phones or the Internet to say or post hurtful things about you?

#of times ------------ # of students

0-5-------------------- 2

6-9-------------------1

10-15-----------------4

16-20------------------15

21-26-------------------5

27plus-----------------3

Total # of students 30

What is the best estimate of the population mean?

Develop a 95% confidence interval for the population mean. Develop a 90% confidence interval for the population mean. Develop a 98% confidence interval for the population mean

Interpret the confidence interval