7
QuizMultiple Choice

Estimating the Mean Difference — Unit test

Question 7 • Probability and Statistics with Applications Honors Sem-2-FL-1210300 (2024-2025)

A researcher is 95% confident that the interval from 5.8 minutes to 9.3 minutes captures the true mean amount of time it takes to pump a full tank of gas in a certain type of SUV.Is it plausible that the true mean number of minutes to fully fill a tank of gas for this type of SUV may be 9?

Question illustration
Answer
A
No, this is not a plausible value for the population mean, because 9 is within the 95% confidence interval.
B
No, this is not a plausible value for the population mean, because 9 is below the upper bound of the 95% confidence interval.
C
Yes, this is a plausible value for the population mean, because 9 is within the 95% confidence interval.
D
Yes, this is a plausible value for the population mean, because 9 is not within the 95% confidence interval.
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