What is the probability that a randomly selected undergraduate, who is a credit

SoccerBoss
Category:
Statistics
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Question description

 An education finance corporation claims that the average credit card debts carried by undergraduates are normally distributed, with a mean of $3173 and a standard deviation of $1020. 

(1) What is the probability that a randomly selected undergraduate, who is a credit card holder, has a credit card balance less than $2663? 
(2) What is the probability that a randomly selected undergraduate, who is a credit card holder, has a credit card balance between $2153 and $3683? 
(3) You randomly select 25 undergraduate who are credit card holders. How many students are expected that their mean credit card balance is less than $2663?


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(Top Tutor) Daniel C.
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