Have harsher penalties and ad campaigns increased seat-belt use among drivers an

Question

Have harsher penalties and ad campaigns increased seat-belt use among drivers and passengers? Observations of commuter traffic have failed to find evidence of a significant change compared with three years ago. Explain what the study's P-value of 0.26 means in this context.

Have harsher penalties and ad campaigns increased seat-belt use among drivers and passengers? Observations of commuter traffic have failed to find evidence of a significant change compared with three years ago. Explain what the study's P-value of 0.26 means in this context. What does the P-value mean? The P-value 0.26 is the probability that the proportion of commuters who wear seat belts has changed. The P-value 0.26 is the probability that the proportion of commuters who wear seat belts has not changed. The P-value 0.26 is the probability of getting results like the ones obtained in the study by natural variation alone, assuming that the proportion of commuters who wear seat belts has increased. One minus the P-value, or 0.74, is the probability that the proportion of commuters who wear seat belts has changed. The P-value 0.26 is the probability of getting results like the ones obtained in the study by natural variation alone, assuming that the proportion of commuters who wear seat belts has not changed.

Explanation / Answer

Answer:

Option e.

P-value is the probability of obtaining the result in the study by natural variation alone, assuming that the null hypothesis is true, that is, that the proportion has not changed.

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