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3. 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 ule uba 4.00 je .are equals] lin ale Jlg ?i. What is the value of the pooled sample variance for the difference between the sample means 18.860 355.640 None of theseO 1.480 16.150 H4,-4,<0 ii. What is the value of the test statistic for testing the hypothesis Hou, -H,=0 against 3.370 None of theseO 0.270 3.37-0 3.44-0

3. 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 ule uba 4.00 je .are equals] lin ale Jlg ?i. What is the value of the pooled sample variance for the difference between the sample means 18.860 355.640 None of theseO 1.480 16.150 H4,-4,<0 ii. What is the value of the test statistic for testing the hypothesis Hou, -H,=0 against 3.370 None of theseO 0.270 3.37-0 3.44-0

Calculus For The Life Sciences
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter13: Probability And Calculus
Section13.2: Expected Value And Variance Of Continuous Random Variables
Problem 10E
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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 سؤال 3 ير مجاب عليه الدرجة من 0 4.0 lie ale P السؤال .are equals] ?i. What is the value of the pooled sample variance for the difference between the sample means 18.860 355.640 None of theseO 1.480 16.150 H4,-4,<0 ii. What is the value of the test statistic for testing the hypothesis Hou, -H,=0 against 3.370 None of theseO 0.270 3,37-0 3.44-0 P Type here to search Ae W Ps 近
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 سؤال 3 ير مجاب عليه الدرجة من 0 4.0 lie ale P السؤال .are equals] ?i. What is the value of the pooled sample variance for the difference between the sample means 18.860 355.640 None of theseO 1.480 16.150 H4,-4,<0 ii. What is the value of the test statistic for testing the hypothesis Hou, -H,=0 against 3.370 None of theseO 0.270 3,37-0 3.44-0 P Type here to search Ae W Ps 近
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Calculus For The Life Sciences
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ISBN:
9780321964038
Author:
GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:
Pearson Addison Wesley,
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