document.write( "Question 220268: A novel tooth whitening agent was created and researchers wanted to test if it worked. A measure of tooth whiteness, the WIO whiteness index (a numerical measure), was obtained on day 1 for 8 study subjects. They then used the tooth whitening agent for 1 week and tooth whiteness was measured again. Assume the tooth whiteness measure was normally distributed.
\n" ); document.write( "Suppose the p-value for the test was .043. What would your conclusion be assuming you wanted a Type I error of 0.01?
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A novel tooth whitening agent was created and researchers wanted to test if it worked. A measure of tooth whiteness, the WIO whiteness index (a numerical measure), was obtained on day 1 for 8 study subjects. They then used the tooth whitening agent for 1 week and tooth whiteness was measured again. Assume the tooth whiteness measure was normally distributed.
\n" ); document.write( "Suppose the p-value for the test was .043. What would your conclusion be assuming you wanted a Type I error of 0.01?
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\n" ); document.write( "The objective implies a one-tail test with 1% in that tail.
\n" ); document.write( "Since the p-value is greater than 1% you would fail to reject
\n" ); document.write( "Ho. You would conclude the whitener was ineffective at the
\n" ); document.write( "1% significant level.
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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