T-Test Practice Problems
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The height of two random samples of students from different schools are measured. Is there a difference in average height of the samples large enough to be significant? (Use the 95% confidence limit)
At school 1 the measured heights were (cm): 145, 140, 138, 142, 154, 154, 158, 160, 166, 166

At school 2 the measured heights were (cm): 148, 162, 153, 163, 157, 167, 161, 172, 162, 172

For the previous scenario, what is the mean height (cm) for both school 1 and 2? *
1 point
For the previous scenario, what is the t-test value? *
1 point
For the previous scenario, is the t-value higher than the critical t-value from the table? *
Use the t-table linked on Mr. Rott's Statistical Analysis Resources website to answer this question
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For the previous scenario, is there a significant difference between the height of students from school 1 and school 2? *
Use the t-table linked on Mr. Rott's website to answer this question
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Justify your answer for the previous question *
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