Some People Claim Psychology Is Common Sense $\begin{array}{l}t_{\text {obt }}=\frac{60-69}{2.606}=-3.45 \\t_{\text {crit }}=1.761 \text { (one-tailed) }\end{array}$

Some people claim psychology is common sense.If this is true, then students who have not taken psychology courses should be able to predict the outcomes of experiments as well as psychology majors.If it is not, nonpsychology students should perform worse than psychology students.Psychology students typically predict outcomes with μ = 69% accuracy.A sample of 15 nonpsychology students predicted with $\begin{array}{l}t_{\text {obt }}=\frac{60-69}{2.606}=-3.45 \\t_{\text {crit }}=1.761 \text { (one-tailed) }\end{array}$ $\bar{X}$ = 60% accuracy.The $S \bar{X}$ = 2.606.If appropriate, calculate the 95% confidence interval for nonpsychology students.