Arandom sample of 36 students at a community college showed an average age of 25 years. assume the ages of all students at the college are normally distributed with a standard deviation of 1.8 years. the 98% confidence interval for the average age of all students at this college is

1) 24.301 to 25.699
2) 24.385 to 25.615
3) 23.200 to 26.800
4) 23.236 to 26.764

30

step-by-step explanation:

idk

i hope i

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

answer: 0.26

i used the calculator on google