Statistics question a.3

label Statistics
account_circle Unassigned
schedule 1 Day
account_balance_wallet $5

Apr 30th, 2015

mean difference=88.2-79.5=8.7

margin of error= 2.262*10.11=22.87

The 95% CI : Lower limit: 8.7-22.97 = -14.17

                      Upper limit: 8.7+22.97 = 31.57

Apr 30th, 2015

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