In a normal approximation to the sign test, the standardised test statistic is calculated as z = -1.58. To test the alternative hypothesis that the location of population 1 is to left of the location of population 2, the p-value is:
A) 0.1142.
B) 0.2215.
C) 0.0571.
D) 0.2284.

Question

Quizplus · Accepted Answer

The p-value for a one-tailed test with z = -1.58 is found by looking up the cumulative probability for z = -1.58 in the standard normal distribution table, which gives approximately 0.0571.

In a Normal Approximation to the Sign Test, the Standardised