QQuestionStatistics
QuestionStatistics
What is the critical value t
∗
for a 90% confidence interval when n= 15?
A. 1.645
B. 1.753
C. 1.761
D. 1.960
5 months agoReport content
Answer
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Step 1I'll solve this step-by-step using statistical hypothesis testing principles:
Step 2: Identify the Key Information
- We need to find the critical t-value ($$t^{*}$$)
- Confidence level = 90% - Sample size (n) = 15
Final Answer
Key Insights: - The critical t-value depends on both confidence level and degrees of freedom - For a 90% confidence interval with 15 samples, the critical value is 1.761 - This value is used to construct confidence intervals or conduct hypothesis tests
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