Use the following information for questions:
A researcher examined the folklore that women can predict the sex of their unborn child better than chance would suggest. She asked 104 pregnant women to predict the sex of their unborn child, and 57 guessed correctly. Using these data, the researcher created the following Minitab output.
-Which choice describes how the p-value was computed in this situation?
A) The probability that a z-score would be greater than or equal to 0.98.
B) The probability that a z-score would be less than or equal to 0.98.
C) The total of the probabilities that a z-score is greater than or equal to 0.98 and less than or equal to-0.98.
D) The probability that a z-score would be between -0.98 and 0.98.

Question

Use the following information for questions:
 A researcher examined the folklore that women can predict the sex of their unborn child better than chance would suggest. She asked 104 pregnant women to predict the sex of their unborn child, and 57 guessed correctly. Using these data, the researcher created the following Minitab output. 
-Which choice describes how the p-value was computed in this situation?
A) The probability that a z-score would be greater than or equal to 0.98. 
B) The probability that a z-score would be less than or equal to 0.98. 
C) The total of the probabilities that a z-score is greater than or equal to 0.98 and less than or equal to-0.98. 
D) The probability that a z-score would be between -0.98 and 0.98.

Quizplus · Accepted Answer

The p-value is computed as the probability of observing a test statistic as extreme as, or more extreme than, the observed value under the null hypothesis. In this context, choice A correctly describes the p-value as the probability that a z-score would be greater than or equal to 0.98, assuming a one-tailed test where the direction of the test is specified.

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