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You are told that X ($), the amount spent per patron at the Royal Brisbane show is normally distributed with mean $49.75 and standard deviation
You are told that X ($), the amount spent per patron at the Royal Brisbane show is normally distributed with mean $49.75 and standard deviation $13.60.
a) Determine the probability that a randomly selected attendee spends more than $45 at the show. Show brief workings to support your answer.
b) Can we always use Z tables to determine probabilities associated with a particular variable of interest? Briefly explain the reasoning behind your answer.
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