Assume the random variable x is normally distributed with mean and standard deviation . Find the indicated probability.

Complete Question

Assume the random variable x is normally distributed with mean u=87 and standard deviation o=5. Find the indicated probability.

P(x<81)

P(x<81)=__(Round to four decimal places).

The  value  is  

Step-by-step explanation:

From the question we are told that

  The mean is  

  The  standard deviation is  

The probability is mathematically represented as

Generally  

From the z-table  

So              

10% of increase is the final answer! : )

7. d. 64

8. i. 32

9. c. 125

10. j. none of the above

11. d. 81

12. i. 216

13. e. none of the above

14. g. 240

15. e. none of the above

16. g. 32

17.   e. none of the above