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Mathematics, 14.12.2019 02:31 bhjbh7ubb
4. a bank wishes to estimate the mean balances owed by customers holding mastercard. the population
standard deviation is estimated to be $500. if a 98 percent confidence interval is used and an interval of $80 is
desired, how many cardholders should be sampled?
a. 44
b. 87
c. 629 d. 213
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