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Home Q & A Board Science-Related Homework Help Mathematics
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Storm Storm
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6 years ago
A survey of college students taking the professional exam to be certified as public school teachers shows that 15 percent fail. On a national exam day, 12,000 students take the test. Let x denote the number who fail. The mean and standard deviation of the random variable x are, respectively:
 a. 1800; 1530
  b. 1800; 39.11
  c. 10,200; 1530
  d. 10,200; 39.11
  e. 1200; 35.71
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irina99irina99
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6 years ago
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Storm Author
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6 years ago
Thanks for your help!!
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Thank you, thank you, thank you!
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