statistics

A sample from a population with  = 40 and  = 10 has a mean of M = 44. If the sample mean corresponds to a z = 2.00, then how many scores are in the sample?
a. n = 100
b. n = 25
c. n = 5
d. n = 4

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asked by Lyndyc
  1. For this answer I got n=4 would this be right considering the numbers in the equation.

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    posted by Lyndyc
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