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anonymous

  • one year ago

The probability distribution of X is given in the table. Which statement is true?

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  1. anonymous
    • one year ago
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    @rational

  2. anonymous
    • one year ago
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  3. rational
    • one year ago
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    where are the statements ?

  4. anonymous
    • one year ago
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  5. rational
    • one year ago
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    start by finding the mean

  6. anonymous
    • one year ago
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    .2?

  7. rational
    • one year ago
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    how

  8. rational
    • one year ago
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    to calculate the mean of distribution, simply multiply the value by corresponding probability then add up

  9. rational
    • one year ago
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    |dw:1432820300274:dw|

  10. rational
    • one year ago
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    multiply each of those pairs then add them

  11. anonymous
    • one year ago
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    oh shoot. 1.8 sorry

  12. rational
    • one year ago
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    try again

  13. anonymous
    • one year ago
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    2.5

  14. rational
    • one year ago
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    try again

  15. anonymous
    • one year ago
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    How?? Um....

  16. rational
    • one year ago
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    im getting 2.8

  17. rational
    • one year ago
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    double check ur calculation

  18. anonymous
    • one year ago
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    I have twice. Hmm I will one more time real fast

  19. anonymous
    • one year ago
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    yes okay 2.8.

  20. anonymous
    • one year ago
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    I kept putting it in the calc wrong.

  21. rational
    • one year ago
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    good, save it. now work the average of possible values of x

  22. rational
    • one year ago
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    |dw:1432820640182:dw|

  23. rational
    • one year ago
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    simply add them up then divide by 5

  24. rational
    • one year ago
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    you divide them by 5 beacause there are 5 of them

  25. anonymous
    • one year ago
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    3

  26. rational
    • one year ago
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    Yes!

  27. rational
    • one year ago
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    so we have : mean of the distribution = 2.8 average of the possible values of x = 3

  28. rational
    • one year ago
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    look at the options

  29. anonymous
    • one year ago
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    C

  30. rational
    • one year ago
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    Yep!

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