(Choose 1 answer)
Let t0.05.52.02
The principal randomly selected six students to take an aptitude test.Their scores were:
77.9 89.1 80.7
78.6 74.4 82.0
Determine a 90%confidence interval for the mean score for all students.Assume that the population has a normal distribution.
Α. (84.54; 76.36)
Β. (84.64; 76.26)
C. None of the other choices is correct
D. (76.35: 84.55)
Ε. (76.26; 84.64)
Q: 11
