Ten subjects were chosen for an experiment. They were asked to perform a certain physical activity. The number ofheartbeats per minute, before and after experiment are recorded as follows:SubjectBeforeAfterSubjectBeforeAfternumbernumber16092727667797717337272698171809.75806872106876Is there sufficient evidence to indicate that the experiment condition increases the number of heartbeats per minute?Use a .05 level of significance.

Solution: Before After d=After -Before (d-d ) (d-d )2 60 92 32 23.2 538.24 67 79 12 3.2…

Ten subjects were chosen for an experiment. They were asked to perform a certain physical activity. The number of heartbeats per minute, before and after experiment are recorded as follows: Subject number Before Subject number Before After After 60 67 92 79 72 71 69 76 73 72 71 72 80 8 9 81 80 75 68 Is there sufficient evidence to indicate that the experiment condition increases the number of heartbeats per minute? 68 72 10 76 Use a .05 level of significance. 1234 5

Ten subjects were chosen for an experiment. They were asked to perform a certain physical activity. The number of heartbeats per minute, before and after experiment are recorded as follows: Subject number Before Subject number Before After After 60 67 92 79 72 71 69 76 73 72 71 72 80 8 9 81 80 75 68 Is there sufficient evidence to indicate that the experiment condition increases the number of heartbeats per minute? 68 72 10 76 Use a .05 level of significance. 1234 5

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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