One a test of English grammar, the mean score is 100 with a standard deviation of...
One a test of English grammar, the mean score is 100 with a standard deviation of 20. A teacher tries out a new teaching method with a class of 25 and the mean performance is 102. Calculate the test statistics value for testing whether this class scored significantly different from the population.
Homework Answers
The test statistic is calculated for hypothesis testing whether it is significantly different from population mean is
t-test will be applicable here because of the n<30
where,
= The
sample mean of 25 classes
and 
=100
, standard
deviation
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One a test of English grammar, the mean score is 100 with a
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