Continue with the situation above; suppose they find the results above and are dissatisfied. a. If..

Continue with the situation above; suppose they find the
results above and are dissatisfied.

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a. If they want $A to be only $2.00, how big a random sample
do they need?

b. If they take a sample of this size, how many times out of
100 will their sample mean be within $2.00 of the true mean?

c. If they take a sample of this size, how many times out of
100 will the true mean be within $2.00 of their sample mean?