Assume that the data has a normal distribution and the number of observations is greater than fifty. Find the critical z
value used to test a null hypothesis.
-$\alpha = 0.1$ for a two-tailed test.
A) $\pm 2.052$
B) $\pm 1.645$
C) $\pm 2.33$
D) $\pm 1.4805$

Question

Quizplus · Accepted Answer

For a two-tailed test with a significance level of 0.1, we need to find the z-value that leaves an area of 0.05 in each tail of the distribution. Using a standard normal distribution table or calculator, the closest z-value is 1.645. However, since this is a two-tailed test, we need to consider the area in both tails, so we take the absolute value and multiply by 2 to get the critical z-value of ±1.645.

Assume That the Data Has a Normal Distribution and the Number