<img src="https://tex.z-dn.net/?f=%5Csqrt%7B3x%2B33%2B17%3D20" id="TexFormula1" title="\sqrt{3x+33+17=20" alt="\sqrt{3x+33+17=20

<span>Given that the average time it takes to replace a defective car radiator is 70 minutes with a standard deviation of 12 minutes.

The 90% confidence interval of a random sample of 50 is given by

$90\% \ C.I.=70\pm1.645 \frac{12}{\sqrt{50}} \\ \\ \Rightarrow 70+1.645 \frac{12}{\sqrt{50}} \ and \ 70-1.645 \frac{12}{\sqrt{50}}$ </span>

8 0

3 years ago

The point (a,b) is in Quadrant IV of a coordinate plane. Describe the location of the point with the coordinates of (b,a)

julia-pushkina [17]

If the point (a, b) is in Quadrant IV of a coordinate plane, then the x-coordinate of (a, b) will be positive and the y-coordinate will be negative.

EX: (5, -5)

4 0

2 years ago

Help me please I need help

Lemur [1.5K]

It actualy gives you the minimum of the function
it helps you because fonding the minimum y will give you the range

4 0

3 years ago