Multiple Choice
A statistics professor wishes to estimate the average mark on a term test for a course that has multiple sections and many students. A survey of some of the students registered for the course reveals the following results: 
If 95% and 98% confidence intervals were developed to estimate the true term test mean, what differences would exist?
A) Standard errors
B) Interval widths
C) Z-values
D) Both "b" and "c"
E) None of the choices are correct
Correct Answer:
Verified
Correct Answer:
Verified
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