document.write( "Question 1192030: sample size is 28.
\n" ); document.write( "sample mean is 17.5
\n" ); document.write( "sample standard deviation is 4.3 hours.
\n" ); document.write( "since you are using sample standard deviation rather than population standard deviation, the use of the t-score is indicated.
\n" ); document.write( "degrees of freedom is sample size minus 1 = 27.
\n" ); document.write( "critical t-score at .05 significance level \n" ); document.write( "

Algebra.Com's Answer #823952 by Boreal(15235) $\"\"$ $\"About$

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1.703 is the critical value for t if a one-way test.
\n" ); document.write( "2.052 the value if a 2-way test.
\n" ); document.write( "t=(x bar-17.5)/4.3/sqrt(28) \n" ); document.write( "

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