According to credit reporting agency experian, the population of consumer credit card holders carries an average credit card balance of $5500, with a standard deviation of $750. you plan to draw a random sample of 625 credit card holders from this population. a. what is the probability that the average credit card balance for the sample will be somewhere between $5450 and $5550? b. how likely is it that the average balance in the sample will be within +1 standard deviation (that is, £ 10x) of the population average? within 12 standard deviations? c. it is 95% likely that the sample average will be within =$ the population average.