Ask a New Question

Question

If only the upper 30% of a normally distributed class passed a quiz for which the mean was 70 and the standard deviation was 10, what was the lowest score a student could have received and still have passed?
13 years ago

Answers

PsyDAG
Z = (score-mean)/SD

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion (.30) related to a Z score. Use the equation above to find the score.
13 years ago
sarah
64.8
12 years ago

Related Questions

Solve 5 Upper A minus 8 Upper Bequals170 for Upper A. Question content area bottom Part 1 Upper A... Solve 3 Upper B minus 8 Upper Dequals96 for Upper B. Question content area bottom Part 1 Upper Be... Line segment upper A upper B is plotted on a coordinate plane. The x-axis ranges from 0 to 7 and the... Solve 7 Upper M minus 8 Upper Nequals217 for Upper M. Question content area bottom Part 1 Upper M... A triangle upper A upper B upper C. The edge upper A upper B is labeled c. The edge upper A upper C... Points upper A upper C mark the ends of a line segment that slopes upward from left to right. Point... Let Upper Delta DOT tilde Upper Delta PANΔDOT~ΔPAN. Find the missing side x. D T O P N A 21... Points Upper A prime and Upper B prime are images of points A and B after a 270degrees rotation abou...
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use