document.write( "Question 1189882: A pharmaceutical company is testing a new cold medicine to determine if the drug has side effects. To test the drug, 7 patients are given the drug and 8 patients are given a placebo (sugar pill). The change in pulse rate (beats per minute) after taking the pill was as follows:
\n" ); document.write( "Given drug: 3 7 3 6 2 5 5
\n" ); document.write( "Given placebo: 2 4 1 1 3 0 2 3\r
\n" ); document.write( "\n" ); document.write( "Test to determine if the drug raises patients’ pulse rate more than the placebo using α = 0.025\r
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Algebra.Com's Answer #821379 by Boreal(15235)\"\" \"About 
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this is a 2-sample t
\n" ); document.write( "Ho: mu drug<=mu placebo
\n" ); document.write( "Ha; mu D > mu P
\n" ); document.write( "alpha=0.025 p{reject Ho|Ho true}
\n" ); document.write( "test is a 2-sample t (0.025, df=14)=2.145
\n" ); document.write( "mean s1=4.429 s1=1.81
\n" ); document.write( "mean s2=2.0 s2=1.31
\n" ); document.write( "t=(s1-s2)/sqrt( (s1^2/n1+(s2^2/n2))
\n" ); document.write( "=2.429/sqrt(0.468+0.215)
\n" ); document.write( "=2.94
\n" ); document.write( "reject Ho and the drug raises the pulse rate more than the placebo, because t value in critical zone.
\n" ); document.write( "p-value=0.0069\r
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