4) In a normal distribution a z score of 2.55 would be:
A) Significant with p

Question

4) In a normal distribution a z score of 2.55 would be:
A) Significant with p < .05 two-tailed
B) Significant with p < .01 two-tailed
C) Significant with p < .001 one-tailed
D) Significant with p < .005 one-tailed

Quizplus · Accepted Answer

A z-score of 2.55 falls within the range of approximately 0.99% of the area under the normal distribution curve. The alpha level corresponding to a one-tailed test would be 0.01, and for a two-tailed test, it would be 0.025. As 0.99% is larger than 0.025 but less than 0.01, the correct answer would be B, significant with p < .01 two-tailed.

4) in a Normal Distribution a Z Score of 2