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A survey of all medium- and large-sized corporations showed that 64% of them offer retirement plans to their employees. Let p be the proportion in

A survey of all medium- and large-sized corporations showed that

64% of them offer retirement plans to their employees. Let p

be the proportion in a random sample of 50such corporations that offer retirement plans to their employees.

Find the probability that the value of

P will be

a. between 0.54 and 0.61

b. greater than

0.71

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