document.write( "Question 478350: It is known that 30% of all customers of a major credit card pay their bills in full before any interest charges are incurred. Suppose a simple random sample of 150 credit card holders is selected.\r \n" );
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document.write( "1) What is the probability that 30 or fewer customers pay their account balances in full before any interest charges are incurred? \n" );
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document.write( "2) What is the probability that between 40 and 50 customers pay their accounts balances in full before any interest charges are incurred?\r \n" );
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document.write( "3)What is the probability that more than 60 customers pay their accounts balances in full before any interest charges are incurred? \n" );
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