
David B. answered 03/24/21
Math and Statistics need not be scary
Queen, you are going to have to add a bit more info here because without a way to come up with sigma and mu (standard deviation and mean), we can't answer these questions. Also doing graphs is out. Text only.
I would guess from the question that the mean is 6.5 and the standard deviation is 2.1 or 1.05.
That would make question 1) 50%, question 2) 68 or 95% question 3) 16 or 5 %. But these are only guesses.
Queen H.
And thank you so much!03/24/21
Queen H.
My apologies! The mean is 6.5 and the SD is 2.1:)03/24/21