The distribution of actual weights of 8-oz chocolate bars produced by a certain machine is normal with mean 7.7 ounces and standard deviation 0.19 ounces. (a) What is the probability that the average weight of a SRS of five of these chocolate bars is between 7.52 and 7.8 ounces? (b) For a SRS of five of these chocolate bars, what is the level L such that there is a 3% chance that the average weight is less than L?

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

where is the diagram? shown below where? ?

step-by-step explanation:

step-by-step explanation:

gym b charges $1.05 less per hour than gym a.