(Choose 1 answer)
The grade point averages for 10 randomly selected high school students are listed below, which implies a sample mean of 2.54 and a sample standard deviation of 1.11. Assume the grade point averages are normally distributed.
2.0 3.2 1.8
4.0 3.3 2.9
2.9 0.9
3.6 0.8
Find a 98% confidence interval for the true mean.
Α. (3.11. 4.35)
Β. (1.55, 3.53)
C. (0.67. 1.81)
D. (2.12. 3.14)
E. None of the other choices is correct
Let 20.01 2.33, 10.01.9 2.82
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