Suppose that a state offered voluntary standardized tests to all its third graders and that these data were used in a study of class size on student performance. which of the following would generate selection bias?

a)schools are unable to control for unobservable student ability

b) scores on standardized test are usually recorded with error

c) class size is simultaneously determined with student performance

d)schools with higher-achieving students could be more likely to volunteer to take the test

add 5 subtract 1

step-by-step explanation:

describing distributions is one of the key skills you’ll need to earn a high score on the ap statistics exam. if you need proof of this, just flip through some past exam questions, which can be found at the collegeboard website. you’ll notice that the first free response question is almost always a question requiring you to look at a graph and describe it.

step-by-step explanation: just trying to get points sorry : (

$3,200 x 7.25% = $3,200 x .0725 = $232 interest monthly

$232 monthly x 12 annual = $2, 784

step-by-step explanation:

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step-by-step explanation: