Asked by shasha
A study is discussed the purity of oxygen from a certain supplier. Assume that the mean was 99.61 with a standard deviation of 0.08. Assume that the distribution of purity was normal. Below what purity value would you expect to represent the smallest 25% of the population?
Answers
Answered by
PsyDAG
Z = (score-mean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion and its Z score. Insert the values in the equation above to solve for the score.
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion and its Z score. Insert the values in the equation above to solve for the score.
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