a) At most what percent of the pills will have more than 513 mg of vitamin C? [3 marks]
b) If you know that standard deviation is 3 mg, how could you improve your estimation? [3 marks]
c) If you know as well that distribution of vitamin C is bell-shaped, how could you improve your estimation? [3 marks]
At most we can have 50 % of pills
Here the percentage will be mean + 2 sigma
µ = 507
σ = 3
P ( X ≥ 513.00 ) = P( (X-µ)/σ ≥ (513-507) / 3)
= P(Z ≥ 2.000 ) = P( Z < -2.000 ) = 0.0228
Please revert in case of any doubt.
Please upvote. Thanks in advance
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