A researcher wants to asses the self-discipline levels among undergraduate and graduate students. A random sample of 300 undergraduate students was selected with average score of 184 and standard...

Extracted text: A researcher wants to asses the self-discipline levels among undergraduate and graduate students. A random sample of 300 undergraduate students was selected with average score of 184 and standard deviation of 16 ( group 1). Also , a random sample of 350 graduate students was selected with average score of 153 and standard deviation of 21 (group 2). Is this enough evidence to conclude that undergraduate students score less, on average than the graduate students. [ assume that the population variances are equals] ?1. What is the value of the pooled samplevarlance for the difference between the sample means None of theseO 355.640 18.860 1.480 16.150 IHip,-p,<0 .="" what="" is="" the="" value="" of="" the="" test="" statistic="" for="" testing="" the="" hypothesis="" ihat,-,-0="" against="" 0.270="" none="" of="" these="" 3="" 3760="" 337-="">