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2 years ago

PLZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ HELP MEHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH!!!!!

Mathematics

1 answer:

erma4kov [3.2K]2 years ago

4 0

Answer:

1 A, 2c, 3A,

4 P= 2(6x-1) + 2(2) P=12x +2

Step-by-step explanation:

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Given

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$n_ 1= 12$ $n_2 = 12$

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Required

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The equation becomes:

$s = \sqrt{\frac{(12-1)*8.7^2+(12-1)*7.5^2}{12+12-2}}$

$s = \sqrt{\frac{1451.34}{22}}$

$s = \sqrt{65.97}$

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So:

$t = \frac{\bar x_1 - \bar x_2}{s\sqrt{\frac{1}{n_1} + \frac{1}{n_2}}}$

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$t = \frac{21.8 - 18.9}{8.12 * \sqrt{\frac{1}{6}}}$

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--------------------------

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