s a statistics class' delivery type a factor in how well students do on the final exam? The table below shows the average percent on final exams from several randomly selected classes that used the different delivery types. Face-to-Face Hybrid Online 67 98 77 57 76 84 70 82 77 74 68 58 55 62 81 56 91 66 60 94 88   95 72   76 69

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Is a statistics class' delivery type a factor in how well students do on the final exam? The table below shows the average percent on final exams from several randomly selected classes that used the different delivery types.

Face-to-Face Hybrid Online
67 98 77
57 76 84
70 82 77
74 68 58
55 62 81
56 91 66
60 94 88
  95 72
  76 69

Assume that all distributions are normal, the three population standard deviations are all the same, and the data was collected independently and randomly. Use a level of significance of α=0.01α=0.01.

    1. Your friend Mariah helped you with the null and alternative hypotheses...
      H0: μ1=μ2=μ3H0: μ1=μ2=μ3
      H1:H1: At least one of the mean is different from the others.

    2. The test-statistic for this data = (Please show your answer to 3 decimal places.)

 

  1. The p-value for this sample =  (Please show your answer to 4 decimal places.)
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