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Mathematics, 28.09.2020 17:01 kriderdavid

The number of litres of petrol purchased by a random sample of motor vehicle drivers is shown below: Questions:
a)Find the mean
b)Find the standard deviation
c)Find the unbiased estimates of the mean and variance for the population this sample comes from.


The number of litres of petrol purchased by a random sample of motor vehicle drivers is shown below

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