faithcalhoun

14.04.2020 • 

Mathematics

Jason reads a report that says 80% of U.S. high school students have a computer at home. He believes the proportion is smaller than 0.80 at his large rural high school. Jason chooses an SRS of 60 students and finds that 41 have a computer at home. He would like to carry out a test at the α = 0.05 significance level of H0: p = 0.80 versus Ha: p < 0.80, where p = the proportion of all students at Jason’s high school who have a computer at home.

Ответ:

letdou2670

23.02.2020

Mathematics

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-35

Step-by-step explanation:

This value of "a" is exactly the y-coordinate of the vertex of the parabola

y = x%5E2+%2B+4x++-+31.

To find it, complete the square:

x%5E2+%2B+4x++-+31 = %28x%2B2%29%5E2+-+4+-+31 = %28x%2B2%29%5E2+-+35.

So, this value of "a" is a = -35.

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