Mathematics

Question

Find the missing probability in the table below.
____
| X | 1 | 2 | 3 | 4 |
___________|


A. 0.85
B. 0.25
C. 0.15
D. 0.75
Find the missing probability in the table below. ____ | X | 1 | 2 | 3 | 4 | ___________| A. 0.85 B. 0.25 C. 0.15 D. 0.75

2 Answer

  • The answer would be B. or D. hope this helps :)

  • Answer:

    Option  C, 0.15

    Step-by-step explanation:

    From the given table probability for x = 1

    [tex]p_{(1)}[/tex] = 0.30

    for x = 2

    [tex]p_{(2)}[/tex] = 0.40

    for x = 3

    [tex]p_{(3)}[/tex] = 0.15

    and for x = 4

    [tex]p_{(4)}[/tex] = x

    As we know that the sum of probabilities of alll events will be 1.

    so [tex]p_{(1)}[/tex]  + [tex]p_{(2)}[/tex] +[tex]p_{(3)}[/tex] + [tex]p_{(4)}[/tex] = 1

    0.30 + 0.40 + 0.15 + x = 1 ⇒ 0.85 + x = 1

    x = 1 - 0.85 = 0.15

    Option  C, 0.15 is the answer.

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