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central limit theorem probability

A normal population has a mean of 81 and a standard deviation of 6. You select a sample of 36. Use Appendix B.1 for the z-values.

 

Compute the probability that the sample mean is: (Round the z-values to 2 decimal places and the final answers to 4 decimal places.)

 

a. Less than 79.

 

Probability             

 

b. Between 79 and 83.

 

Probability             

 

c. Between 83 and 84.

 

Probability             

 

d. Greater than 84.

 

Probability             


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