Question

The weight of 1000 children average 50 kg and the standard deviation is 5 kg. what is the z-score corresponds to 55?

Solution:​

Answer 1

Step-by-step explanation:

Assume a normal distribution.

Convert the upper and lower weight limits to ‘Z’ scores using the given average (or mean) and standard deviation.

Now use those scores in a table or online calculator (say Normal distribution calculator ) to find the fraction of the children between the the scores.

Finally obtain the fraction of 1,000 using that fraction.