Question

The mean height of the students in a class is 152cm.the mean height of boys is 158cm with a standard deviation of 5cm.and the mean height of girls is 148cm with a standard deviation of 4cm..find the percentage of boys in the class and also the s. D of height of all the students in the class??

Answer 1

Answer:

sorry...

Explanation:

The mean height of the students in a class is 152cm.the mean height of boys is 158cm with a standard deviation of 5cm.and the mean height of girls is 148cm with a standard deviation of 4cm..find the percentage of boys in the class and also the s. D of height of all the students in the class??