Suppose that z-scores come from a standard normal distribution. Use the Normal Probability Applet (Links to an external site.) to answer this question. What proportion of the z-scores will be between - 1 and 1? (Give your answer as a decimal, accurate to three decimal places e. g. If the answer was 0.389184 you would enter 0.389)

Question

Mathematics

Nancy Frederick

24 August, 21:32

Suppose that z-scores come from a standard normal distribution. Use the Normal Probability Applet (Links to an external site.) to answer this question. What proportion of the z-scores will be between - 1 and 1? (Give your answer as a decimal, accurate to three decimal places e. g. If the answer was 0.389184 you would enter 0.389)

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Answers (1)

Know the Answer?

Mcmahon · Answer 1

0.683

Step-by-step explanation:

We have to find P (-1
For this purpose, we use normal distribution area table

P (-1
Using normal area table and looking the value corresponds to 1.0, we get

P (-1
P (-1
Rounding the answer to three decimal places

P (-1
So, 68.3% of the z-scores will be between - 1 an 1.