Suppose the daily demand for petrol at a certain petrol station is nomally distributed with a mean of 6849 litres and a standard deviation of 342 litres. This morning the manager notices that there is 7105.5 litres in storage with the next delivery coming only at closing. a) What is the probability that there will be enough petrol to meet the daily demand? (Rounded to 4 decimal places)Answer b) If a year has 365

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Suppose the daily demand for petrol at a certain petrol station is nomally distributed with a mean of 6849 litres and a standard deviation of 342 litres. This morning the manager notices that there is 7105.5 litres in storage with the next delivery coming only at closing.

a) What is the probability that there will be enough petrol to meet the daily demand? (Rounded to 4 decimal places)Answer

b) If a year has 365 days, how many days do you expect the demand to be less than 7105.5 litres? (Rounded to the nearest integer)

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