Normal probabilities with the z-table Quiz: answer key
Every answer, with a link to its step-by-step solution
| # | Answer | Level | Solution |
|---|---|---|---|
| 1 | C P(X < 60) = 0.8413 | Easy | Solved step by step |
| 2 | P(X < 45) = 0.1587 | Easy | Solved step by step |
| 3 | A P(X < 112) = 0.9332 | Easy | Solved step by step |
| 4 | 0.8413 | Easy | Solved step by step |
| 5 | A 0.7745 | Medium | Solved step by step |
| 6 | 0.0918 | Medium | Solved step by step |
| 7 | A P(X < 34) = 0.1151 | Medium | Solved step by step |
| 8 | P(X < 63.5) = 0.9192 | Harder | Solved step by step |
| 9 | B 0.0606 | Harder | Solved step by step |
| 10 | P(X < 480) = 0.2119 | Harder | Solved step by step |
Grade
Count your right answers and divide by the number of questions: A 90% or more, B 80%, C 70%, D 60%, F below 60%.