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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)

Sagot :

batolisis

Answer:

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

Step-by-step 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

View image batolisis
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