The mean height of students in a college is 155 cms and standard deviation is 15. What is the probability that the mean height of 36 students is less than 157 cms

Answer 1

Z = (score-mean)/SEm

SEm = SD/√n

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability of the Z score. Probability > .50.

Answer 2

Please tell my answer

Answer 3

Question adgithe answer rakuda ...options vasthunai ntiiiii

Answer 4

z=(157-155)/(1.5/√36)
z=4;
z score of 4 in standard normal deviation is 0.99997
or 99.997%