Consider a one-sample two-sided z-test for a population proportion. Given that conditions for inference are met, which of the following is closest to the pvalue for a test statistic of z = -1.86 ? 0.0157
B
0.0314
с
0.0628
D
0.9371
E
0.9686
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(c, 0) i might be wrong so don't put full faith on my answer

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204

8

step-by-step explanation: