The geometric distribution Quiz
10 questions · easy to harder · University Statistics · score and step-by-step answers
How it works
- 10 questions, about 30 minutes (a timer counts down; you can hide it). Solve it right here: no sign-up.
- 5 questions have choices. For the others you type the answer: a number like 4, −2, 7/2 or 3.5, or for example x = 4, x = 2 or x = −3, (3, 5), 2x + 1. Use ^ for powers (x^2) and sqrt for √. Any form with the same value counts (7/2 = 3.5).
- One question at a time: Back, Next, Mark for review and the question list at the bottom. A calculator is on the screen.
- At the end: your percent and grade, every question right or wrong, why a wrong choice is wrong, and its step-by-step solution. Then practise the lesson with new questions.
Your answers and results are kept in this browser only, so you can close the page and come back.
1 Question 1
Find the probability of success 0.2, P(first success on try 3).- A) 128
- B) 0.1024
- C) 0.1280
- D) 0.2
2 Question 2
Find the probability of success 0.4, P(first success on try 2).Type the answer.
3 Question 3
Flip a coin until heads, P(first heads on flip 3)- A) 0.0625
- B) P(X = 3) ≈ 0.0125
- C) P(X = 3) ≈ 0.1250
- D) P(X = 3) ≈ 1.25
4 Question 4
Find the probability of success 0.25, expected number of tries.Type the answer.
5 Question 5
Roll a die until a 6, P(first 6 on roll 4)- A) P(X = 4) ≈ 0.0965
- B) P(X = 4) ≈ 0.00965
- C) 0.0804
- D) P(X = 4) ≈ 0.965
6 Question 6
Find the probability of success 0.6, P(first success on try 3).Type the answer.
7 Question 7
Find the probability of success 0.5, P(first success within 4 tries).- A) 0.5
- B) 9.375
- C) 0.0625
- D) 0.9375
8 Question 8
Find the probability of success 0.2, expected number of tries.Type the answer.
9 Question 9
Roll a die until a 6, P(first 6 within 3 rolls)- A) P(X ≤ 3) ≈ 4.213
- B) P(X ≤ 3) ≈ 0.04213
- C) 0.0046
- D) P(X ≤ 3) ≈ 0.4213
10 Question 10
Find the probability of success 0.05, expected number of tries.Type the answer.