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3 years ago

P（x）=x³-5x²+4x-3D（x）=x-1

Mathematics

1 answer:

snow_tiger [21]3 years ago

7 0

Answer:

hope this helps.

btw I used synthetic decision method

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Step-by-step explanation:

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Answer:

$t \approx 2.639$

Step-by-step explanation:

Given

$\begin{array}{ccc}{} & {USA\ 1} & {Japan\ 2} & {\bar x} & {64.6} & {67.5} &{n} & {30} & {30} & {\sigma} & {4.0} & {4.5} \ \end{array}$

See attachment for data

Required

Determine the test statistic

The test statistic is calculated using:

$t = \frac{\bar x_1 - \bar x_2}{\sqrt{\frac{\sigma_1^2}{n_1} + \frac{\sigma_2^2}{n_2}}}$

So, we have:

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$t = \frac{64.6 - 67.5}{\sqrt{\frac{16.00}{30} + \frac{20.25}{30}}}$

$t = \frac{64.6 - 67.5}{\sqrt{\frac{16.00+20.25}{30}}}$

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$t = \frac{-2.9}{1.099}$

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The absolute value is:

$t \approx 2.639$

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Answer:

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Step-by-step explanation:

they both have b

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P（x）=x³-5x²+4x-3D（x）=x-1​

P（x）=x³-5x²+4x-3D（x）=x-1