Question

A high school teacher is interested to compare the average time for students to complete a standardized test for three different classes of students. The teacher collects random data for time to complete the standardized test (in minutes) for students in three different classes and the dataset is provided below. The teacher is interested to know if the average time to complete the standardized test is statistically the same for three classes of students. Use a significance level of 5%. The teacher has confirmed that the samples were randomly selected and independent, and the populations have normal distribution and the population variances are equal. (a) calculate the Test Statistic for this example (round your answer to 2 decimal places) (b) calculate the P-value for this example (round your answer to 2 decimal places)

Answer 1

hello some parts of your question is missing attached below is the missing part

"Class A" Class B Class C

111 120 107

75 96 93

109 112 89

101 89 117

102 103 82

81 112 64

103 98 107

87 101 101

88 82 114

answer : a) Test statistic = 0.46

b) p-value = 0.64

Explanation:

A) To calculate the Test statistic ; use excel software

steps involved :

i) import Data, ii) choose Anova; single factor

iii) choose input range and column in groups iv) choose output range

attached below is the table

b ) calculate the P -value

P-value = 0.64