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27 March, 03:13

The proportion of students in a psychology experiment who could remember an eight-digit number correctly for t minutes was:

0.9 - 0.3 ln (t) (for t > 1).

Find the proportion that remembered the number for 5 minutes. (Round your answer to one decimal place.)

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  1. 27 March, 04:54
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    Step-by-step explanation:

    The proportion of students in a psychology experiment who could remember an eight-digit number correctly for t minutes was:

    0.9 - 0.3 ln (t)

    the proportion that remembered the number for 5 minutes, we would substitute t = 5 into expression, 0.9 - 0.3 ln (t). It becomes

    0.9 - 0.3 ln5

    = 0.9 - 0.3 * 1.60943791243

    = 0.9 - 0.4828

    = 0.4172

    Approximately 0.4 to 1 decimal place
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