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 thhe 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 i. What is the value of the test statistic for testing the hypothesis IHat,-H,-0 against 0.270 None of these 3376 337- 3.44

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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]
?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-
3.44
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] ?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- 3.44
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