document.write( "Question 1176847: A random sample of 300 observations from a normal population whose standard deviation is 100 produced a mean of 150. Test the null hypothesis H0: μ=160 against the alternative hypothesis
\n" ); document.write( "HA: μ<160. Use α=0.05 \n" ); document.write( "

Algebra.Com's Answer #804806 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi\r\n" );
document.write( " normal population whose standard deviation is 100 produced a mean of 150:\r\n" );
document.write( "Yes, z-test\r\n" );
document.write( "Ho: μ=160\r\n" );
document.write( "Ha: μ < 160\r\n" );
document.write( "α=0.05\r\n" );
document.write( "Using z-test:\r\n" );
document.write( "  = -1.7321\r\n" );
document.write( "p-value = .0416\r\n" );
document.write( " .0416 < .05  Reject Ho.\r\n" );
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document.write( "Wish You the Best in your Studies.\r\n" );
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