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QUESTION 10 10) A student researcher performed a independent sample t test to test whether population mean of one group is less than the the other. After taking random sample from both groups he calculated the p-value. It was 0.0457. He changed his mind and decided to test for difference of means in two populations. What is the new p-value? a. 0.0457 b.0.9543 c. 0.0914 d. Cannot determine from given information.

QUESTION 10 10) A student researcher performed a independent sample t test to test whether population mean of one group is less than the the other. After taking random sample from both groups he calculated the p-value. It was 0.0457. He changed his mind and decided to test for difference of means in two populations. What is the new p-value? a. 0.0457 b.0.9543 c. 0.0914 d. Cannot determine from given information.

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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Oc. Ho: Hd = 0 vs H₁: Hd > 0 Od. Ho: Hd = 0 vs H₁: Hd ≤0 QUESTION 10 10) A student researcher performed a independent sample t test to test whether population mean of one group is less than the the other. After taking random sample from both groups he calculated the p-value. It was 0.0457. He changed his mind and decided to test for difference of means in two populations. What is the new p-value? a. 0.0457 b.0.9543 c. 0.0914 d. Cannot determine from given information. D QUESTION 11 11) A psychologist is conducting a two sample (independent samples) t-test to compare two treatment conditions. She intended to see whether there is a s two treatments. Following data were obtained: Treatment one group: # of participants = 20, sample mean = 75, sample standard dev (s) = 3.15. Observations are normally distributed Treatment two group: # of participants = 15. sample mean = 72, sample standard dev (s) = 3. 54. Observations are normally distributed Use 1% significance level. Assume 1 and 2 are the population means for groups of treatment one and two respectively. a) What is null and alternative hypotheses? b) What is the value of the test statistic? c) What is the p-value? d) What is your conclusion? For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac).
Transcribed Image Text:Oc. Ho: Hd = 0 vs H₁: Hd > 0 Od. Ho: Hd = 0 vs H₁: Hd ≤0 QUESTION 10 10) A student researcher performed a independent sample t test to test whether population mean of one group is less than the the other. After taking random sample from both groups he calculated the p-value. It was 0.0457. He changed his mind and decided to test for difference of means in two populations. What is the new p-value? a. 0.0457 b.0.9543 c. 0.0914 d. Cannot determine from given information. D QUESTION 11 11) A psychologist is conducting a two sample (independent samples) t-test to compare two treatment conditions. She intended to see whether there is a s two treatments. Following data were obtained: Treatment one group: # of participants = 20, sample mean = 75, sample standard dev (s) = 3.15. Observations are normally distributed Treatment two group: # of participants = 15. sample mean = 72, sample standard dev (s) = 3. 54. Observations are normally distributed Use 1% significance level. Assume 1 and 2 are the population means for groups of treatment one and two respectively. a) What is null and alternative hypotheses? b) What is the value of the test statistic? c) What is the p-value? d) What is your conclusion? For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac).
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