QUESTION 4 The credit card debts of all college students have a normal distribution with a mean of RM3000 and a standard
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QUESTION 4 The credit card debts of all college students have a normal distribution with a mean of RM3000 and a standard
QUESTION 4 The credit card debts of all college students have a normal distribution with a mean of RM3000 and a standard deviation of RM700. (a) Find the probability that the credit card debts are less than RM4000. (b) If a random sample of 40 college students is selected, find the standard deviation of the sample mean for credit card debts are less than RM4000.
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