From a sample of n = 10 of marijuana consignments the tetrahydrocannabidiol  (THC) content has been measured, and the mean found to be 9.5% and the variance 8.9%. Assuming x and s2 are good estimates of µ and s2 Calculate the percentage of marijuana samples expected to contain greater than 15.5 % THC.                            Determine the percentage of marijuana samples expected to contain less than 8.3% THC.        iii. Determine the percentage of marijuana samples expected to contain between 10.0 and 15.0 %  THC.

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