margin of error

[mattdrankin]

Suppose you administer a certain aptitude test to a random sample of 9 students in your high school, and the average score is 105. We want to determine the mean ? of the population of all students in the school. Assume a standard deviation of ? = 15 for the test.


What is the margin of error?

 

[galactus]

I thought I just answered this in your last post.

 

[mattdrankin]

you told me to look up a t table and i didn't see 98% any where in the t table but i did see the 8 thing