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The HR director at a company says that 15% of college graduates, to whom they send...

The HR director at a company says that 15% of college graduates, to whom they send brochures, apply for jobs. In a sample of 300 persons receiving brochures, 30 applied. Complete a two-tailed hypothesis test at the 5% significance level for a single proportion to determine if the HR director’s claim is valid.

  1. What is the null hypothesis?
  2. What is the alternative hypothesis?
  3. What are the critical values of the z statistic?
  4. What is the test statistic (a.k.a. calculated value of the z-statistic) from the sample data?
  5. What is your decision?
  6. What is your conclusion?
Math   Statistics-And-Probability   
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