Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. A vending m
achine will only accept coins weighing between 5.48 g and 5.82 g. What percentage of legal quarters will be rejected? Round your answer to two decimal places.
1 answer:
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Answer:
The correct answer is "".
Step-by-step explanation:
Given:
n = 21
s = 3.3
c = 0.9
now,
⇒ =
=
⇒ =
hence,
The 90% Confidence interval will be:
=
=
=
=