Most people can roll their tongues, but many cant. The ability to roll the tongue is genetically

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Most people can roll their tongues, but many can’t.

The ability to roll the tongue is genetically determined.

Suppose we are interested in determining what proportion of students can roll their tongues.

We test a simple random sample of 400 students and find that 317 can roll their tongues. The margin of error for a 95% confidence interval for the true proportion of tongue rollers among students is closest to

(a) 0.0008.

(c) 0.03.

(e) 0.05.

(b) 0.02.

(d) 0.04.

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Related Book For  book-img-for-question

The Practice Of Statistics

ISBN: 9781464108730

5th Edition

Authors: Daren S. Starnes, Josh Tabor

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