A standardized​ exam's scores are normally distributed. In a recent​ year, the mean test score was 21.3 and the standard deviation was 5.6. The test scores of four students selected at random are 14​, 24​, 9​, and 36. Find the​ z-scores that correspond to each value and determine whether any of the values are unusual.
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Part 1
The​ z-score for 14 is
  
enter your response here.
​(Round to two decimal places as​ needed.)
Part 2
The​ z-score for 24 is
  
enter your response here.
​(Round to two decimal places as​ needed.)
Part 3
The​ z-score for 9 is
  
enter your response here.
​(Round to two decimal places as​ needed.)
Part 4
The​ z-score for 36 is
  
enter your response here.
​(Round to two decimal places as​ needed.)
Part 5
Which​ values, if​ any, are​ unusual? Select the correct choice below​ and, if​ necessary, fill in the answer box within your choice.
A. The unusual​ value(s) is/are: enter your response here.
​(Use a comma to separate answers as​ needed.)
B. None of the values are unusual.