Statistics: A professor of a large math class uses sampling to determine whether grades are curved or now. Curving occurs if the mean of the grading distribution is not 75. A random sample of 225 grades has mean 70 and standard deviation s = 20. Set up the corresponding hypothesis test and interpret the result.
Looks like you are holding a cop's nightstick or something lol. Nice video though, helped me understand a lot better than from my crappy textbook.
FBIRoyLindell 3 months ago
@FBIRoyLindell Thanks! I downgraded to a regular pointer. - Bob
MathDoctorBob 3 months ago
great video, statistics test today, and hopefully this will push me over the top to get that A! Just having to remember the dumb steps in the critical value and p value approach.
spartant22 7 months ago
@spartant22 Thanks! Good luck on your exam. -Bob
MathDoctorBob 7 months ago
Thankyou, I find your videos very helpful.
zxr250chris 8 months ago
@zxr250chris You're welcome, and thanks for the support! - Bob
MathDoctorBob 8 months ago