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How to solve basic probability

  • Thread starter twrtoad
  • Start date
  • #1
1
0
P(10≤x≤12)
σ=2,μ=11
x= a normally distrributed random variable

I dont even know where to begin to solve this. I was hoping someone could show me how and explain it to me like im a 6 year old.
thanks everybody in advance.
 

Answers and Replies

  • #2
mathman
Science Advisor
7,797
428
Let y = (x-μ)/σ. Then y is a standard normally distributed random variable. The domain of interest is then -1/2≤y≤1/2. Look up a table for the standard normal distribution to get the answer.
 
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