I really need help with this question can anyone help me
Posted 10-19-2009 at 10:09 PM by kaylita
Test scores on the ACT exam are normally distributed with a mean of 21.1 and a standard deviation of 4.8.
Using the 68-95-99.7 rule, find the percentage of ACT scores within 14.4 of the mean of 21.1.
Using the 68-95-99.7 rule, find the percentage of ACT scores within 14.4 of the mean of 21.1.
Total Comments 1
Comments
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I'm assuming your question is how many people score within the band of 6.7 and 35.5. If it is, then the probability is 99.865%
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Posted 10-30-2009 at 07:52 PM by qwe789123
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