what score will divide 45 of the scores from the bottom 55 r
what score will divide 45% of the scores from the bottom 55% round to nearest whole # if means =75 and standard deviation is =11
what score will divide 45% of the scores from the bottom 55% round to nearest whole # if means =75 and standard deviation is =11
what score will divide 45% of the scores from the bottom 55% round to nearest whole # if means =75 and standard deviation is =11
Solution
First, we get the z score from the given left tailed area. As
Left tailed area = 0.55
Then, using table or technology,
z = 0.125661347
As x = u + z * s,
where
u = mean = 75
z = the critical z score = 0.125661347
s = standard deviation = 11
Then
x = critical value = 76.38227482 = 76 [ANSWER]
