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1. Given N(14, 4), find the z-score for 9.

 

2. Using your z-score table, find P(z < 1.89)

 

3. Using your z-score table, find P(z > −0.84)

 

4.Using your z-score table, find P(−1.06 < z < 2.13)

 

5. if the scores of a math test are normally distributed with an average score of 76 and a standard deviation of 5, what percentage of students scored below a 65?

You MUST include the % symbol in your answer.

 

here is the z-score table_ 

 

 
 Mar 28, 2019

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