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Hatshy [7]
2 years ago
7

Help this is due in a few minutes!!

Mathematics
1 answer:
zloy xaker [14]2 years ago
7 0
I think it’s a im not that sure though
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Given that a sports writer wished to see if a football filled with helium travels farther, on average, than a football filled with air. To test this, the writer used eighteen adult male volunteers. These volunteers were randomly divided into two groups of nine subjects each.

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SD 8.00 6.00

SEM 2.67 2.00

N 9     9    

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standard error of difference = 3.333

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