maddie7417

23.04.2020 • 

Mathematics

An agricultural field test compares two varieties of corn, silver queen and country gentlemen. The researches takes 10 plots and divides each of these plots in half. Each plot has a similar amount of sun light, shade, quality of soil and irrigation. The variety of corn is randomly chosen for each half of a plot. After the harvest, the yield of corn is measured for each half plot at each location. The yield from silver queen was compared to the yield of country gentlemen. Note: Differences were taken by taking Silver Queen - Country Gentlemen The 95% confidence interval for the mean is (-0.223, 0.988). What can we expect will be the p-value for a two sided test using this data?

A. The p-value should be smaller than 0.05.
B. The p-value should be higher than 0.05.
C. The p-value should be smaller than 0.95.
D. The p-value should be higher than 0.95.

Ответ:

desiwill01

24.08.2021

Mathematics

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First, distribute the negative one signs.
8x^5 +6x^3 -2x^2 +10x + (-1)(9x^5 -x^3 -13x^2 +4)
By multiplying -1 by 9x^5, -x^3, -13x^2, and 4. It will lead to this:
8x^5 +6x^3 -2x^2 +10x -9x^5 +x^3 +13x^2 -4
You then combine the like terms.
(8x^5 -9x^5) + (6x^3 +x^3) + (-2x^2 +13x^2) + (10x) + (-4)
This leads to the answer.

-x^5 +7x^3 +11x^2 +10x -4

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