You answer should be 7/12, or aprox. 0.58 (I could be wrong)
You need to divid the number of outcomes that will satisfy your probability (anything that’s not 4,10,2,3, or 11, so there are 7 numbers left) by the total number of outcomes, (12), and that’s your answer
Answer:
We have ln(b^3) - ln(a^2) = ln(b^3/a^2);
Step-by-step explanation:
A score of 85 would be 1 standard deviation from the mean, 74. Using the 68-95-99.7 rule, we know that 68% of normally distributed data falls within 1 standard deviation of the mean. This means that 100%-68% = 32% of the data is either higher or lower. 32/2 = 16% of the data will be higher than 1 standard deviation from the mean and 16% of the data will be lower than 1 standard deviation from the mean. This means that 16% of the graduating seniors should have a score above 85%.
