Multiple Choice
A course work of a student is dedicated to the investigation of sleep. To begin with, it is important to establish whether there is a difference in the average duration of sleep for people of different age groups. For this purpose, the student considers several random samples to study four age groups. Using a multiple comparison procedure identify differences between mean durations of sleep for considered age groups. Use 95% Tukey-Kramer confidence interval.
A) Using the 95% Studentized range critical value , we can calculate the CI:
B) Using the 95% Studentized range critical value , we can calculate the CI:
C) Using the 95% Studentized range critical value , we can calculate the CI:
D) Using the 95% Studentized range critical value , we can calculate the CI:
E) Using the 95% Studentized range critical value , we can calculate the CI:
Correct Answer:

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Correct Answer:
Verified
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