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In: Statistics and Probability

1. A random sample of 10 chocolate energy bars of certain brand has, on average, 232.5...

1. A random sample of 10 chocolate energy bars of certain brand has, on average, 232.5 calories per bar and with a standard deviation of 15 calories. Assume that the amount of calories per bar is normally distributed.

            a. Do an analysis using an 80% (not a typo) confidence interval.

            b. Using this confidence interval, is there evidence that the average is different from the 240 calories that is printed on the label (μ=240)?   

C. Perform a test of significance to determine if there evidence that the average is different than 240 calories. Use ∝ =10%.

            1.                                                                     2.

           

            3.                                                                     4.

           

            5.                                                                     6.

            7.

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