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2 years ago

8

Help meee plsss!!!!!!

1 answer:

masya89 [10]2 years ago

3 0

Answer:

56m²

Step-by-step explanation:

1/2×b×h

1/2×14×8

1/2×112

112/2

56m²

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3 years ago

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DaniilM [7]

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Step-by-step explanation:

Given

<u>Brand A</u> <u>Brand B</u>

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Required

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

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So:

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

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3 0

3 years ago