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# Null and Alternative Hypotheses about Annual Incomes

STATS-ECKVPE

The mean gross annual income of certified nurses are normally distributed with the mean of $\$50,000$and a standard deviation of$\$6,000$. The nurse association wishes to find out whether their nurses earn more or less than $\$50,000$annually. A random sample of$400$certified nurses was surveyed. The sample mean of these nurses' annual income is$\$56,000$ with a standard deviation of $\$7,000$. Which of the following is the alternative hypothesis? A Alternate:$µ > \$50,000$

B

Alternate: $µ < \$50,000$C Alternate:$µ ≠ \$50,000$

D

Alternate: $µ ≠ \$56,000\$