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19 votes
19 votes
A sample with a mean of M = 8 has EX = 56. How many scores are in the sample?

The number of scores is n =

User Dyng
by
3.5k points

1 Answer

15 votes
15 votes

Answer:


n = 7

Explanation:

Given


\bar x = 8 --- the mean


\sum x = 56 --- sum of scores

Required

The number of scores (n)

This is calculated as:


\bar x = (\sum x)/(n)

Make n the subject


n = (\sum x)/(\bar x)


n = (56)/(8)


n = 7

User Aerendir
by
3.0k points