Thirty-three college freshmen were randomly selected for an on-campus survey at their university. the participants' mean gpa was 2.5, and the standard deviation was 0.5. what is the margin of error, assuming a 95% confidence level? (assume a normal distribution.)

Step-by-step explanation:

Given : Sample size : n= 33

Critical value for significance level of :

Sample mean :

Standard deviation :

We assume that this is a normal distribution.

Margin of error :

i.e.

Hence, the  margin of error is

which expression represents the approximate length of bc?

step-by-step explanation: