Question

Use technology or a z-score table to answer the question. Scores on a standardized military exam are normally distributed with a mean of 57 and a standard deviation of 9. Consider a group of 4000 military students. Approximately how many students will score less than 66 on the test?

Answer 1

9514 1404 393

Answer:

  3365

Step-by-step explanation:

About 4000 × 0.8413 = 3365 students will score less than 66.

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Additional comment

A calculator I trust more says the fraction is 0.841344746..., a slightly higher value, but not enough higher to change the answer.

Answer 2

Answer:

3366

Step-by-step explanation: