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15 February, 13:25

A large jar contains 25% blue marbles. A sample contains 9 blue marbles, 15 red marbles, and 16 green marbles.

What is pˆ, the sample proportion of blue marbles?

Enter your answer, as a simplified fraction, in the box.

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  1. 15 February, 15:37
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    Proportion of blue marbles in in sample = 9/40

    Step-by-step explanation:

    Total number of blue marbles in a jar is given by 25%

    Lets find the probability of blue marble in the jar of the given sample:

    Proportion of blue marbles in in sample = Total number of blue marbles in sample / Total number of marbles in sample

    Where

    Total number of blue marbles in sample = 9

    Total number of marbles in sample = 9 + 15 + 16

    Total number of marbles in sample = 40

    SO

    Proportion of blue marbles in in sample = 9/40

    or

    Proportion of blue marbles in in sample = 9/40
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