x P(x) 0 0.2 1 0.25 2 0.1 3 0.45 Find the mean of this probability distribution. Round your answer to one decimal place. x P(x) 0 0.15 1 0.15 2 0.25 3 0.45 Find the standard deviation of this probability distribution. Give your answer to at least 2 decimal places
Added by Ian E.
Close
Step 1
Given probabilities: P(0) = 0.15 P(1) = 0.15 P(2) = 0.25 P(3) = 0.45 Mean = 0*0.15 + 1*0.15 + 2*0.25 + 3*0.45 Mean = 0 + 0.15 + 0.5 + 1.35 Mean = 2 Show more…
Show all steps
Your feedback will help us improve your experience
Qudsiya Anis and 70 other Intro Stats / AP Statistics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
Adi S.
x P(x) 0 0.2 1 0.15 2 0.25 3 0.4 Find the standard deviation of this probability distribution. Give your answer to at least 2 decimal places
Joanna Q.
Calculate the standard deviation σ of X for the probability distribution. (Round your answer to two decimal places.) x: 0, 1, 2, 3 P(X = x): 0.3, 0.4, 0.1, 0.2 Calculate the standard deviation σ of X for the probability distribution. (Round your answer to two decimal places.) x: 1, 2, 3, 4 P(X = x): 0.1, 0.4, 0.3, 0.2 Calculate the standard deviation σ of X for the probability distribution. (Round your answer to two decimal places.) x: -20, -10, 0, 10, 20, 30 P(X = x): 0.1, 0.1, 0.4, 0.1, 0, 0.3
Manisha S.
Recommended Textbooks
Elementary Statistics a Step by Step Approach
The Practice of Statistics for AP
Introductory Statistics
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD