One sample of n=15 students spent one hour studying material from an e-book and then were tested on the material; their mean is = 79 with = 25. A second sample of n=15 students spent one hour studying...

One sample of n=15 students spent one hour studying material from an e-book and then were tested on the material; their mean is  = 79 with  = 25.  A second sample of n=15 students spent one hour studying the same material from a hard copy of the text, and then earned a mean of = 83 with  = 23.  Run a two-tailed hypothesis test with alpha = .05.

Write the alternative hypothesis.

Write the null hypothesis.

With α=.05, what is
t_crit
?

Compute
t_obt

What should the researcher conclude?