what appropriate null and alternative hypothesis would i use in this problem a teacher gives students a holding review session. did attending the session make a differnts in the final points in the class,give example of the appropriate statisical procedure

Answer 1

Ho: mean1 = mean2
Ha: mean1 ≠ mean2

Z = (mean1 - mean2)/standard error (SE) of difference between means

SEdiff = √(SEmean1^2 + SEmean2^2)

SEm = SD/√n

If only one SD is provided, you can use just that to determine SEdiff.

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion related to the Z score.