In a recent year, the scores for the reading portion of a test were normally dis

Question

In a recent year, the scores for the reading portion of a test were normally distributed, with a mean of 23.4 and a standard deviation of 5.2. Complete parts (a) through (d) below. (Round to four decimal places as needed.) (d) Identity any unusual events. Explain your reasoning. Choose the correct answer below. A. The events in parts (a) and (b) are unusual because its probabilities are less than 0.05. B. The events in part (c) is unusual because its probability is less than 0.05. C. The event in part (a) is unusual because its probability is less than 0.05. D. None of the events are unusual because all the probabilities are greater than 0.05.

Explanation / Answer

Any event having less than probabilty 0.05 is unsual.

The events in part (c)is unusual because its probabilities are less than 0.05.

Option C is correct.

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