We Must Use the T-Distribution Instead of the Z-Distribution to Calculate

question 45

Multiple Choice

We must use the t-distribution instead of the Z-distribution to calculate probabilities for real- world data sets because of what reason?

• A) Sampling error causing the sample and population means to differ.
• B) Sampling error causing the samples and populations to differ.
• C) Uncertainty about the sample's standard deviation.
• D) Uncertainty about the population's standard deviation.