In a Sample of 28 Participants,a Researcher Estimates the 95

Multiple Choice

In a sample of 28 participants,a researcher estimates the 95% CI for a sample with a mean of M = 1.5 and an estimated standard error (S_M) of 0.3.What is the confidence interval at this level of confidence?

A) 95% CI 1.0, 2.0
B) 95% CI 1.2, 1.8
C) 95% CI 0.9, 2.1
D) there is not enough information to answer this question