Asked by Samuel Lee
                Scores on a test are Normally distributed with mean 78 and standard deviation 8.  Find the probability that a randomly chosen student scored between 70 and 80 on the test.
            
            
        Answers
                    Answered by
            oobleck
            
    70 = µ - 1σ
80 = µ + 0.125σ
so, what does your Z table tell you?
You can play around with Z-table stuff at
https://davidmlane.com/hyperstat/z_table.html
    
80 = µ + 0.125σ
so, what does your Z table tell you?
You can play around with Z-table stuff at
https://davidmlane.com/hyperstat/z_table.html
                                                    There are no AI answers yet. The ability to request AI answers is coming soon!
                                            
                Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.