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Interval for the difference of the population

John wants to compare two means. His sample statistics were Picture and Picture. Assuming equal variances, the 95 percent confidence interval for the difference of the population means is approximately: [2.44, 6.19]. [1.17, 5.08]. [0.08, 4.32]. [-0.09, 3.19].

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## Q : Amounts of soft drink machine

The amounts of soft drink machine is designed to dispense for each drink are normally distributed, with a mean of 11.7 fluid ounces and a standard deviation of 0.3 fluid ounce. A drink is randomly selcted.