Two teaching methods and their effects on science test scoresare being reviewed. A random sample of 9 students, taught intraditional lab sessions, had a mean test score of 71.5 with astandard deviation of 4.1. A random sample of 6 students, taughtusing interactive simulation software, had a mean test score of77.9 with a standard deviation of 4.7. Do these results support theclaim that the mean science test score is lower for students taughtin traditional lab sessions than it is for students taught usinginteractive simulation software? Let μ1 be the mean testscore for the students taught in traditional lab sessions andμ2 be the mean test score for students taught usinginteractive simulation software. Use a significance level ofα=0.05
for the test. Assume that the population variances are equal andthat the two populations are normally distributed.
Step 3 of 4 :
Determine the decision rule for rejecting the null hypothesisH0
. Round your answer to three decimal places.
Reject H0 if t/or |t|, (<, or >) _________
