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Question 1 Given a normal distribution with µ=20 and σ = 4, what is the probability...

Question 1

Given a normal distribution with µ=20 and σ = 4, what is the probability that

  1. X>24
  2. X<24
  3. X<24 or X>24

INSTRUCTIONS: Show all your work as to how you have reached your answer. Please don’t simply state the results. Show graphs where necessary

Math   Statistics-And-Probability   
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Homework Answers

Answer #1

It is given that X has normal distribution. . The probabilities are calculated by converting to z-scores.

Use normal distribution table.

a) The probability,

b) Using the complement,

c) The probability of the union,

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