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# Null and Alternative Hypothesis for ABC

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1) The average salary of managers in the advertising industry is \$180,000 per year. Suppose we would like to take a sample of managers at a new company ABC, to see whether the mean annual salary is different from that of the industry. State the null and alternative hypotheses.

2) Suppose a sample of 40 managers at ABC showed a sample mean annual salary of \$170,000. Assume a population standard deviation of \$30,000. With = .05 as the value of significance, what is your conclusion?

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1) Answer:
Null hypothesis- The average salary of managers in the advertising industry is \$180,000 per year
Alternative hypothesis- The average ...

#### Solution Summary

Null and alternative hypothesis for ABC are examined.

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