According to Global Research News (March 4, 2014), one-fourth of all rough diamonds produced in the world
Question:
According to Global Research News (March 4, 2014), one-fourth of all rough diamonds produced in the world are blood diamonds, i.e., diamonds mined to finance war or an insurgency. Exercise 3.81. In a random sample of 700 rough diamonds purchased by a diamond buyer, let x be the number that are blood diamonds.
a. Find the mean of x.
b. Find the standard deviation of x.
c. Find the z-score for the value x = 200.
d. Find the approximate probability that the number of the 700 rough diamonds that are blood diamonds is less than or equal to 200.
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a For n 700 and p 25 n...View the full answer
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Related Book For 
Statistics For Business And Economics
ISBN: 9780134506593
13th Edition
Authors: James T. McClave, P. George Benson, Terry Sincich
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