A researcher is conducting a study to determine how knowledge teenagers are abou

Question

A researcher is conducting a study to determine how knowledge teenagers are about making good food choices. She decides to interview teenagers eating at a fast food restaurant. The results may be biased because this is a Voluntary response sample Convenience sample A manufacturer of batteries routinely tests its products to determine lifetime (hours of continuous usage). Suppose they select a sample of 30 AAA batteries and find that the average lifetime is 1500 hours. This "1500 hours" is a parameter. statistic. sample. population. A distribution (histogram) may or may not have a mode. True False

Explanation / Answer

6. The survey is restricted to only one part of foods (fast foods). So this will result in biasness. This is the example of (A) Voluntary response sample. (Ans).

7. We are estimating the population lifetime using the sample lifetime. The average sample lifetime is the statistic. So the correct choice is (B) statistic. (Ans).

8. A distribution (histogram) may be unimodal or multimodal, but it should have mode. So the given statement is (B) False.

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