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A researcher develops a new drug to treat stress but she isn't sure what kind of effect it will have on people. In order to investigate the effects, one sample of n=9 people receives the drug, and a different sample of n=9 receives a placebo. After treatment, the drug group reports a mean stress level of M = 41 with SS = 95. The control group reports a mean stress level of M = 42 with SS = 110. Using a two-tailed hypothesis test with a = .05, which of the following lists the correct %3D test statistic value as well as conclusion? O t = 1.69 t = 12.81 O t= -0.59 O t = 0.59

A researcher develops a new drug to treat stress but she isn't sure what kind of effect it will have on people. In order to investigate the effects, one sample of n=9 people receives the drug, and a different sample of n=9 receives a placebo. After treatment, the drug group reports a mean stress level of M = 41 with SS = 95. The control group reports a mean stress level of M = 42 with SS = 110. Using a two-tailed hypothesis test with a = .05, which of the following lists the correct %3D test statistic value as well as conclusion? O t = 1.69 t = 12.81 O t= -0.59 O t = 0.59

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 develops a new drug to treat stress but she isn't sure what kind of effect it will have on people. In order to investigate the effects, one sample of n=9 people receives the drug, and a different sample of n=9 receives a placebo. After treatment, the drug group reports a mean stress level of M = 41 with SS = 95. The control group reports a mean stress level of M = 42 with SS = 110. Using a two-tailed hypothesis test with a = .05, which of the following lists the correct test statistic value as well as conclusion? O t = 1.69 t = 12.81 t = -0.59 O t = 0.59
Transcribed Image Text:A researcher develops a new drug to treat stress but she isn't sure what kind of effect it will have on people. In order to investigate the effects, one sample of n=9 people receives the drug, and a different sample of n=9 receives a placebo. After treatment, the drug group reports a mean stress level of M = 41 with SS = 95. The control group reports a mean stress level of M = 42 with SS = 110. Using a two-tailed hypothesis test with a = .05, which of the following lists the correct test statistic value as well as conclusion? O t = 1.69 t = 12.81 t = -0.59 O t = 0.59
A researcher hypothesizes that the general population has a mean of u = 50 on some %3D variable of interest. To test this hypothesis, the researcher collects data from a sample of n = 16 participants. The sample mean is then calculated to be M = 55 with sample standard deviation of s = 3. Using a two-tailed hypothesis test with a = .05, which of the following lists the correct test statistic value as well as conclusion? O t= 6.67; Fail to Reject Ho O t = 6.67; Reject Ho z = 6.67; Fail to Reject Ho O z = 6.67; Reject Ho
Transcribed Image Text:A researcher hypothesizes that the general population has a mean of u = 50 on some %3D variable of interest. To test this hypothesis, the researcher collects data from a sample of n = 16 participants. The sample mean is then calculated to be M = 55 with sample standard deviation of s = 3. Using a two-tailed hypothesis test with a = .05, which of the following lists the correct test statistic value as well as conclusion? O t= 6.67; Fail to Reject Ho O t = 6.67; Reject Ho z = 6.67; Fail to Reject Ho O z = 6.67; Reject Ho
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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:
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