Adding Mentos mints to a caffeine diet soda container causes the beverage to spr

Question

Adding Mentos mints to a caffeine diet soda container causes the beverage to spray out of its container creating a huge soda geyser. A researcher claims that the average height of the geyser is 8.75 feet. After sampling 50 bottles of the same caffeine diet soda with the Mentos mints, the average height of the geyser was determined to be 10.17 feet. What is the statistic of interest? A 1.42 feet, the difference between the heights of the geyser for all sodas and the 50 sodas sampled. B 8.75 feet, the average height of the geyser for all sodas. C 10.17 feet, the average height of the geyser for the 50 sodas sampled. D 18.92 feet, the sum of the heights of the geyser for all sodas and the 50 sodas sampled.

Explanation / Answer

(B) 8.75 ft , is the statistic of interest .

Justification: As the hypothesis is that 8.75ft is the average height of all the sodas.

10.17ft is just the result of one set of trials (sample result). As sample results are tested against the

(expected height) 8.75 ft, the latter is the statistic of interest

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