Answer to Question #85585 in Statistics and Probability for Anand

Question

Previous studies on some spherical seeds have revealed that their mean diameter
is 10 mm with a standard deviation of 2 mm. We start with 1000 seeds and pass
them through two sieves so that only seeds whose diameter is between 9.5mm and
10.5mm are left. Find out the following:
(i) How many such seeds will we get?
(ii) If we discard only those seeds with diameter less than 6 mm, then how many
will be left?

Answer 1

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