Which best describes bias, if any, from the sample surveyed?
survey: favorite vacation locations
sample: randomly selected visitors to a national park
a.
since the sample is randomly selected, there is unlikely to be any bias.
b.
since the people surveyed are visiting a national park, they may be biased against vacations close to home.
c.
since the people surveyed are visiting a national park, they may be biased towards national parks.
d.
since a large number of people visit national parks, the sample should be large enough to eliminate any bias.

no one knows lol

step-by-step explanation:

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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answers

rauschg

rauschg · hand

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