a. Suppose that the mean retail price per litre of unleaded petrol in the greater region of Sydney is $1.96 with a standard deviation of $0.15. Assume that the retail price per litre is normally distributed. Use the empirical rule to answer the following questions: i. What percentage of unleaded petrol prices in the Sydney greater region falls between $1.66 and $2.26 per litre? ii. Between what two values does the middle 99.7% of unleaded petrol prices in the Sydney greater region fall?

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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a.
Suppose that the mean retail price per litre of unleaded petrol in the greater region of
Sydney is $1.96 with a standard deviation of $0.15. Assume that the retail price per litre
is normally distributed. Use the empirical rule to answer the following questions:
i.
What percentage of unleaded petrol prices in the Sydney greater region falls
between $1.66 and $2.26 per litre?
ii.
Between what two values does the middle 99.7% of unleaded petrol prices in
the Sydney greater region fall?
Transcribed Image Text:a. Suppose that the mean retail price per litre of unleaded petrol in the greater region of Sydney is $1.96 with a standard deviation of $0.15. Assume that the retail price per litre is normally distributed. Use the empirical rule to answer the following questions: i. What percentage of unleaded petrol prices in the Sydney greater region falls between $1.66 and $2.26 per litre? ii. Between what two values does the middle 99.7% of unleaded petrol prices in the Sydney greater region fall?
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