document.write( "Question 1056825: The level of calcium in the blood of healthy young adults follows a Normal distribution with mean μ = 10 milligrams per deciliter and standard deviation σ = 0.4. A clinic measures the blood calcium of 100 healthy pregnant young women at their first visit for prenatal care. The mean of these 100 measurements is = 9.8. Is this evidence that the mean calcium level in the population of healthy pregnant young women is less than 10? To answer this, test the hypotheses H0: μ = 10 versus Ha: μ < 10 at the 5% significance level.
\n" ); document.write( "What is the value of the P-value? \n" ); document.write( "

Algebra.Com's Answer #672465 by Fombitz(32388) $\"\"$ $\"About$

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Calculate the z statistic,
\n" ); document.write( " $\"z=%289.8-10%29%2F%280.4%2Fsqrt%28100%29%29=-5\"$
\n" ); document.write( "At this z value,
\n" ); document.write( " $\"P=2.8x10%5E%28-7%29\"$
\n" ); document.write( "Yes, there is evidence that $\"mu%3C10\"$
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