Question 1
Given a normal distribution with µ=20 and σ = 4, what is the probability that
INSTRUCTIONS: Show all your work as to how you have reached your answer. Please don’t simply state the results. Show graphs where necessary
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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