Many delivery trucks feature a "How Am I Driving?" sticker on the rear bumper, along with a phone number. This sticker allows drivers to report erratic driving by the truck driver or offer a compliment if they like. A dispatcher at the
trucking station accepts calls and records information from those who call the phone number. The dispatcher reports
that in the past month, 218 calls were received. Of those calls, 178 reported negative driving behaviors by the truck
drivers. How might this data-collection method produce bias in obtaining an estimate of all drivers who are satisfied
with the company's truck drivers?

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step-by-step explanation:

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the area of a triangle is determined by the formula: base x height * 1/2

you'll need to assign a base to the triangle. based on the vertices given, the simplest base would be the line segment from (-2,1) to (2,1). the distance between any two numbers is found by just subtracting them. here, you should subtract the x values to find the distance of this side.

2 - (-2) = 4.

so the distance (aka the length of the base) is 4. the height of the triangle is the distance between the base and the highest point on the triangle which is (3,4). we should subtract the y values this time to find the height/distance.

4 - 1 = 3

so the height is 3.

base = 4

height = 3

hope this if needed hmu