Can you taste PTC? PTC is a substance that has a strong bitter taste for some people

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Can you taste PTC? PTC is a substance that has a strong bitter taste for some people and is tasteless for others. The ability to taste PTC is inherited. About 75% of Italians can taste PTC, for example. You want to estimate the proportion of Americans who have at least one Italian grandparent and who can taste PTC.

(a) How large a sample must you test to estimate the proportion of PTC tasters within 0.04 with 90%

confidence? Answer this question using the 75%

estimate as the guessed value for p^ .

(b) Answer the question in part

(a) again, but this time use the conservative guess p^ = 0.5. By how much do the two sample sizes differ?

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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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