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].

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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].
ii. What is the value of the test statistic for
testing the hypothesis Ho4,-H2=0 against
ONone of these
O3.37
O-3.37
O-3.44
O0.27
Transcribed Image 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]. ii. What is the value of the test statistic for testing the hypothesis Ho4,-H2=0 against ONone of these O3.37 O-3.37 O-3.44 O0.27
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