Olly, the retail manager of a camera store, believes that his store may be closed by corporate in the near future, so he cannot
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Answer:
the probability that exactly 30 of the 500 calculators IS 0.0495
Explanation:
Given data:
number of calculators n = 500,
percentage of defected calculators p = 0.05
From Normal approximation method;
Therefore probability is
P(X= 30) = P(29.5< X< 30.5) ( from continuous correction)
=0.0495 (from standard table of Z )