Mathematics, 30.10.2020 17:00, heartprague
It is assumed that the test results for a class follow a normal distribution with a mean of 78 and a standard deviation of 36. If you know that a student's grade is greater than 72, what is the probability that it is greater than 84
Answers: 3
, Standard deviation 
![P(X84)=P(\dfrac{X-\mu}{\sigma}\dfrac{84-78}{36})\\\\=P(Z0.167)\ \ \ [Z=\dfrac{X-\mu}{\sigma}]\\\\=1-P(Z](/tpl/images/0855/3207/b543f.png)
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