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A professor claims that students who have faster typing speed (in words per minute) tend to have higher scores in his quizzes. To verify if there is indeed a positive linear association between the two, he randomly selected 30 of his students and computed the sample correlation coefficient as 0.3234. Which of the following statement(s) is(are) TRUE? 1. There is a positive weak linear O association between the typing speed and quiz scores. O II. Faster typing speed results to higher scores in quizzes. Both Land II

A professor claims that students who have faster typing speed (in words per minute) tend to have higher scores in his quizzes. To verify if there is indeed a positive linear association between the two, he randomly selected 30 of his students and computed the sample correlation coefficient as 0.3234. Which of the following statement(s) is(are) TRUE? 1. There is a positive weak linear O association between the typing speed and quiz scores. O II. Faster typing speed results to higher scores in quizzes. Both Land II

Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 32E
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A professor claims that students who have faster typing speed (in words per minute) tend to have higher scores in his quizzes. To verify if there is indeed a positive linear association between the two, he randomly selected 30 of his students and computed the sample correlation coefficient as 0.3234. Which of the following statement(s) is(are) TRUE? O 1. There is a positive weak linear association between the typing speed and quiz scores. II. Faster typing speed results to higher scores in quizzes. Both I and II Neither I nor II
Transcribed Image Text:A professor claims that students who have faster typing speed (in words per minute) tend to have higher scores in his quizzes. To verify if there is indeed a positive linear association between the two, he randomly selected 30 of his students and computed the sample correlation coefficient as 0.3234. Which of the following statement(s) is(are) TRUE? O 1. There is a positive weak linear association between the typing speed and quiz scores. II. Faster typing speed results to higher scores in quizzes. Both I and II Neither I nor II
During the Lazhopee 11-11 event, it was observed that male users were shopping most often for mobile accessories. Hence, it is of interest to know whether the sex is associated to the category of the item bought. A random sample of 500 users were obtained and their sex and the category of the item bought was recorded. Suppose that a p-value less than 0.0001 was obtained using the appropriate test, which of the following statement(s) is(are) TRUE? 1. The appropriate test to use is Pearson's Chi-Square Test of Independence. II. There is sufficient evidence to say Othat sex is associated to the category of the item bought. Both I and II Neither I nor II
Transcribed Image Text:During the Lazhopee 11-11 event, it was observed that male users were shopping most often for mobile accessories. Hence, it is of interest to know whether the sex is associated to the category of the item bought. A random sample of 500 users were obtained and their sex and the category of the item bought was recorded. Suppose that a p-value less than 0.0001 was obtained using the appropriate test, which of the following statement(s) is(are) TRUE? 1. The appropriate test to use is Pearson's Chi-Square Test of Independence. II. There is sufficient evidence to say Othat sex is associated to the category of the item bought. Both I and II Neither I nor II
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