standard normal distribution
Let the random variable X follow a normal distribution with μ=40 and σ2=49.
use the standard normal distribution table to solve
| a. |
Find the probability that X is greater than 50. |
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b. |
Find the probability that X is greater than 20 and less than 53. |
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c. |
Find the probability that X is less than 45. |
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d. |
The probability is 0.1 that X is greater than what number? |
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e. |
The probability is 0.03 that X is in the symmetric interval about the mean between which two numbers? |
