3. The National Center of Education Statistics conducted a survey of high school seniors, collecting test data on reading, writing, and several other subjects. Here we examine a simple random sample of 200 students from this survey. Side-by-side box plots of reading and writing scores as well as a histogram of the differences in scores are shown below 20 10 20 Diferences in scores (read - write) a. Is there a clear difference in the average reading and witing scores? b. Are the reading and writing scores of each student independent of each other? The average observed difference in scores is xd=-0.545x¯d=-0.545, and the standard deviation of the differences is 8.887 points. Do these data provide convincing evidence of a difference between the average scores on the two exams? Conduct a hypothesis test; interpret your conclusions in context.

3. The National Center of Education Statistics conducted a survey of high school seniors, collecting test data on reading, writing, and several other subjects. Here we examine a simple random sample of 200 students from this survey. Side-by-side box plots of reading and writing scores as well as a histogram of the differences in scores are shown below 20 10 20 Diferences in scores (read - write) a. Is there a clear difference in the average reading and witing scores? b. Are the reading and writing scores of each student independent of each other? The average observed difference in scores is xd=-0.545x¯d=-0.545, and the standard deviation of the differences is 8.887 points. Do these data provide convincing evidence of a difference between the average scores on the two exams? Conduct a hypothesis test; interpret your conclusions in context.

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Description: 3. The National Center of Education Statistics conducted a survey of high school seniors,collecting test data on reading, writing, and several other subjects. Here we examine asimple random sample of 200 students from this survey. Side-by-side box p

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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