Mathematics 18 Online
OpenStudy (anonymous):

The mean and standard deviation height (in cms) for fifty girls in year 10 at a particular school are 164.3 and 7.49 respectively. The mean height for thirty-six boys is 173.5 cm. If 4 boys of the 36 boys in year 10, are shorter than the mean height for girls find the standard deviation of the boys’ heights. Assume all heights are normally distributed.

OpenStudy (anonymous):

Ijust cant do it

OpenStudy (agreene):

there is no question in this statement. However, I would like to note that statistically it is impossible for someone to be any specific height since it is a continuous variable.

OpenStudy (anonymous):

It dose " find the standard deviation of the boys’ heights"

OpenStudy (agreene):

just tell your prof you refuse to do this because length (height) is a continuous variable and therefore this problem is statistically invalid.

OpenStudy (anonymous):

Yes but i would still like to know how to solve this type of problome :D

OpenStudy (anonymous):

Even if it is worded wrong

OpenStudy (agreene):

I'm sorry but i just cant do anything with this, it just doesnt make any sense and it isn't even a vaild question to ask you.

OpenStudy (anonymous):

Lol tnx, i feel the same thats why i asked lol

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