Asked by Jennifer Aguilar on Jun 09, 2024
Verified
A researcher collects data from a group of 21 people at Time 1 and Time 2. Assuming α = .05 (two-tailed) , the critical value is ______.
A) 2.096
B) 2.086
C) 2.845
D) 2.528
Critical Value
A threshold value in statistical testing used to determine whether to reject the null hypothesis.
Alpha
The threshold of significance in hypothesis testing, representing the probability of committing a Type I error.
- Identify and apply the correct critical values for t-tests based on sample size and significance levels.
Verified Answer
NY
Nathanael YoungJun 16, 2024
Final Answer :
B
Explanation :
The critical value for a two-tailed test with α = .05 and 20 degrees of freedom (21 people - 1) is 2.086, as determined from a t-distribution table or calculator.
Learning Objectives
- Identify and apply the correct critical values for t-tests based on sample size and significance levels.
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