Answer (Choose 1 answer)
A random sample of 150 students has a grade point average with a mean of 2.86. Assume the population standard deviation is 0.78. Construct the confidence interval for the population mean. Use a 98% confidence level.
Let 20.01 2.33, 2002 =2.05
A. None of the other choices is correct
Β. (2.71, 3.01)
C. (2.51, 3.53)
D. (2.31. 3.88)
Ε. (2.43, 3.79)
4
