SOLUTION: What is the probability of observing a a value more then .75 from a standard normal distribution? I got 1-.7734 What is the probability of observing a number less then 5 or more

Question 598203: What is the probability of observing a a value more then .75 from a standard normal distribution?
I got 1-.7734
What is the probability of observing a number less then 5 or more than 10 from a normal distribution with mean 9 and standard deviation 2?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
What is the probability of observing a a value more then .75 from a standard normal distribution?
I got 1-.7734 = 0.2266
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What is the probability of observing a number less then 5 or more than 10 from a normal distribution with mean 9 and standard deviation 2?
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z(5) = (5-9)/2 = -2
z(10) = (10-9)/2 = 1/2
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P(x < -2) or P(x > 1/2)
= 0.0228 + 0.3985
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= 0.3303
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Cheers,
Stan H.
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