If the lower and upper confidence limits of the population mean ?, using a sample of size 100, are 225 and 280, respectively, then the lower and upper confidence limits of the total of a population of size 3000 are respectively
a. 652,500 and 812,000
b. 675,000 and 840,000
c. 697,500 and 868,000
d. 652,862 and 812,452
B
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