Asked by Morgan Rivers on May 17, 2024
Verified
A two-tailed test is performed at the .05 level of significance.The p-value is determined to be .01.The null hypothesis
A) must be rejected.
B) should not be rejected.
C) could be rejected, depending on the sample size.
D) has been designed incorrectly.
Two-tailed Test
A statistical hypothesis test in which the area of interest is in both tails of the probability distribution, considering both directions of an effect.
Level Of Significance
The threshold used to determine the statistical significance of an observed effect; denoted by alpha, typically set at 0.05 or 5%.
P-value
The chance of obtaining test outcomes that are as drastic as, or more drastic than, the ones actually observed, under the premise that the null hypothesis is right.
- Understand the association between the significance level (α), p-values, and the conclusion to either reject or not reject the null hypothesis.
Verified Answer
TS
Tennille SillerMay 21, 2024
Final Answer :
A
Explanation :
The p-value is less than the level of significance (.01 < .05), which means there is strong evidence against the null hypothesis. Therefore, the null hypothesis must be rejected.
Learning Objectives
- Understand the association between the significance level (α), p-values, and the conclusion to either reject or not reject the null hypothesis.