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rikkie

  • one year ago

The scores on a nursing school entrance exam are normally distributed with a mean of 500 and a standard deviation of 100. Suppose 600 students took the test. Approximately how many students scored above 490?

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  1. campbell_st
    • one year ago
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    do you have the z score for 490..?

  2. campbell_st
    • one year ago
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    |dw:1442001624440:dw|

  3. rikkie
    • one year ago
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    Isn't the z-score for 490 1? 600-500/100

  4. campbell_st
    • one year ago
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    well the z score for 490 is z =(490 - 500)/100 z = -0.1 now look up that value... and get a percentage....

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