AP Statisticsmediummcq1 pt
Which is true about the t interval versus the z interval for the same data?
A.t is wider for small samples
B.t is narrower for small samples
C.they are always identical
D.z requires unknown σ
Explanation
Core Concept
t* exceeds z* when df is small.
Correct Answer
At is wider for small samples
More Unit 7: Inference for Quantitative Data: Means practice questions
- mediumA test computes t = 2.3 with df = 15, giving a small p-value. The interpretation is
- easyA one-sample t interval's conditions include
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- mediumA two-sample t test with t = 0.1 likely gives
- hardFor the same confidence level, which has the largest critical value?
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