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Intelligence level scores as estimated by both the Stanford-Binet knowledge test and the Wechsler insight test have a mean of 100. The standard deviation for the Stanford-Binet test is 16, while that for the Wechsler test is 15. For which test do a more modest level of test-takers score under 80?

WechslerStanford-Binet

Why?

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Since this test has a more modest standard deviation, a more prominent level of scores fall inside 20 marks of the mean.

Since this test has a more prominent standard deviation, a more modest level of scores fall inside 20 places of the mean.

Since this test has a more prominent standard deviation, a more noteworthy level of scores fall inside 20 places of the mean.

Since this test has a more modest standard deviation, a more modest level of scores fall inside 20 marks of the mean.None of the abovementioned.