Question
A random sample of 9-year-olds yielded the following results. At α=0.05, do the data support the...
A random sample of 9-year-olds yielded the following results. At α=0.05, do the data support the claim that there is a difference in the average heights?
|
Boys |
Girls |
|
|---|---|---|
|
Sample size |
60 |
50 |
|
Mean height (cm) |
123.5 |
126.2 |
|
Population variance |
98 |
120 |
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