Question Explanations For
Test (Math Test - Calculator)
(A) is incorrect because the table says nothing about leaving the state. (C) is incorrect because the table says nothing about traveling. (D) is incorrect because residents of California are still much more likely to have been born in-state than not in-state, since 630 out of the 863 people surveyed were born in-state.
If you picked (D), you may have missed a decimal place.
(A) is incorrect because a control group helps to confirm the accuracy of an experiment. (B) is incorrect because splitting the buttercups into equal groups is not enough to make the experiment yield valid results. (C) is incorrect because random assignment does provide evidence for a causal relationship.
If you don’t notice this, you can let x be the distance from Springton to McCormack and use the Pythagorean Theorem to find that (8 - x)2 + 42 = x2, which you can solve to get x = 5.