Assume that, on average, healthy young adults dream 90 minutes each night. An investigator wishes to determine if drinking coffee just before falling asleep affects the amount of dream time. After drinking a 12 ounce cup of coffee, dream time is monitored for a random sample of 49 young adults to compare the time they spend dreaming to young adults overall. Results show a sample mean X with bar on top = 86 minutes of dream time and a sample standard deviation of s = 14 minutes.The critical t values are 2.704 and -2.704 Use the t test to test the null hypothesis at .01 level of significance. What is the best decision?

Retain the null at .01 level of significance and df = 48 because t < 2.704

Reject the null at .01 level of significance and df = 48 because t > 2.704

Reject the null at .01 level of significance and df = 48 beccause t < 2.704

Retain the null at .01 level of significance and df = 48 if t > 2.704