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I ALREADY HAVE THE ANSWERS TO THE PROBLEMS, BUT I AM IN NEED OF THE WORK SHOWN ON THESE PROBLEMS. PLEASE HELP! THANKS Problems 9-1.

I ALREADY HAVE THE ANSWERS TO THE PROBLEMS, BUT I AM IN NEED OF THE WORK SHOWN ON THESE PROBLEMS. PLEASE HELP! THANKS



Problems 

9-1. Hourly wages of workers in a particular industry are normally distributed with a mean of $22.20 and a standard deviation σ = $2.50. A random sample of 49 workers was taken from a certain company in this industry; their average hourly wage was $21.20. 

  1. What are the null and the alternative hypotheses of testing whether this company can be accused of paying inferior wages? 
  2. What is the value of the test statistic for testing whether this company can be accused of paying inferior wages? 
  3. What is the p-value for testing whether this company can be accused of paying inferior wages? 
  4. What is the rejection region for testing, at the 0.01 level of significance, whether this company can 

be accused of paying inferior wages? 

  1. What is the conclusion of testing whether this company can be accused of paying inferior wages at 

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