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QUESTION 22 "A sociologist administers a measure of test-taking skills to a group of children from lower socio-economic status neighorhoods to determine a potential difference in test-taking skills compared to children from more affluent neighborhoods. The direction of this hypothesis test is one-tailed and the test statistics of z = -2.46 was observed. If testing at an alpha level of 0.01 , would the null hypothesis (HO) be rejected or retained?" O Reject O Retain

QUESTION 22 "A sociologist administers a measure of test-taking skills to a group of children from lower socio-economic status neighorhoods to determine a potential difference in test-taking skills compared to children from more affluent neighborhoods. The direction of this hypothesis test is one-tailed and the test statistics of z = -2.46 was observed. If testing at an alpha level of 0.01 , would the null hypothesis (HO) be rejected or retained?" O Reject O Retain

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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**Question Completion Status:** 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 --- **QUESTION 20** "A clinician has found a significant effect of a new drug and wants to know the effect size. If the population mean = 45 with a standard deviation = 16.5 and the clinical observed a sample of n = 64 had a mean = 41, then what would be the effect size in terms of Cohen’s d?" - 0.24 - -0.24 - 1.94 - -1.94 --- **QUESTION 21** "Lula-Rae Inc. claims that ingesting a concoction of lemon and lavender essential oils will significantly elevate mood in consumers. To test this, a skeptical premedical student selects a sample of 144 participants. Each participant drinks a mixture of the essential oils and then completes a mood inventory. The population score on this mood inventory has a mean = 101 with a standard deviation = 24. The sample of n = 144 participants had a mean score of M = 103. Calculate the z-observed value that would result from this hypothesis test (Be sure to round your answer to the second decimal place)." --- **QUESTION 22** "A sociologist administers a measure of test-taking skills to a group of children from lower socio-economic status neighborhoods to determine a potential difference in test-taking skills compared to children from more affluent neighborhoods. The direction of this hypothesis test is one-tailed and the test statistics of z = -2.46 was observed. If testing at an alpha level of 0.01, would the null hypothesis (H₀) be rejected or retained?" - Reject - Retain ---
Transcribed Image Text:**Question Completion Status:** 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 --- **QUESTION 20** "A clinician has found a significant effect of a new drug and wants to know the effect size. If the population mean = 45 with a standard deviation = 16.5 and the clinical observed a sample of n = 64 had a mean = 41, then what would be the effect size in terms of Cohen’s d?" - 0.24 - -0.24 - 1.94 - -1.94 --- **QUESTION 21** "Lula-Rae Inc. claims that ingesting a concoction of lemon and lavender essential oils will significantly elevate mood in consumers. To test this, a skeptical premedical student selects a sample of 144 participants. Each participant drinks a mixture of the essential oils and then completes a mood inventory. The population score on this mood inventory has a mean = 101 with a standard deviation = 24. The sample of n = 144 participants had a mean score of M = 103. Calculate the z-observed value that would result from this hypothesis test (Be sure to round your answer to the second decimal place)." --- **QUESTION 22** "A sociologist administers a measure of test-taking skills to a group of children from lower socio-economic status neighborhoods to determine a potential difference in test-taking skills compared to children from more affluent neighborhoods. The direction of this hypothesis test is one-tailed and the test statistics of z = -2.46 was observed. If testing at an alpha level of 0.01, would the null hypothesis (H₀) be rejected or retained?" - Reject - Retain ---
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