aA statistics lecturer wants to find out whether there is a difference in the exammean score among the three classes he teaches. Table 2 shows the descriptivestatistics for the exam scores.ClassSample size, nMean scoresStandardDeviationMT11475.310.5MT21382.68.6MT31666.515.3Table 2Conduct an appropriate test at 5% significance level to help the statisticslecturer to find out whether there is any difference in the exam scores amongthe three classes.

Statistics Lecturer is testing the mean score for 3 classes Class MT1 MT2 MT3…

Answered: For the exam scores. Class MT1 MT2…

Math

Statistics

For the exam scores. Class MT1 MT2 Sample size, n 14 13 Mean scores 75.3 826

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 30PPS

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Question

a
A statistics lecturer wants to find out whether there is a difference in the exam
mean score among the three classes he teaches. Table 2 shows the descriptive
statistics for the exam scores.
Class
Sample size, n
Mean scores
Standard
Deviation
MT1
14
75.3
10.5
MT2
13
82.6
8.6
MT3
16
66.5
15.3
Table 2
Conduct an appropriate test at 5% significance level to help the statistics
lecturer to find out whether there is any difference in the exam scores among
the three classes.

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