A recent survey at a large corporation found that 38% of employees are putting the maximum allowable
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Question:
A recent survey at a large corporation found that 38% of employees are putting the maximum allowable contribution towards their retirement. A random sample of 40 employees is taken.
a) What is the mean of the sample?
b) What is the standard deviation of the sample?
c) Of the employees sampled, what is the probability that at least 30 are putting the maximum allowable contribution towards their retirement?
d) Of the employees sampled, what is the probability that between 15 and 20employees are putting the maximum allowable contribution towards their retirement?
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