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8 January, 17:11

A standard I. Q. test produces normally distributed results with a mean of 104 and a standard deviation of 16 for 52,000 students in grade 12 in the province. Approximately how many of these people would have I. Q. s below 76?

2,127

4,170

23,915

2,083

+1
Answers (1)
  1. 8 January, 17:51
    0
    Z = (76 - 104) / 16

    z = - 1.75

    4%

    .04 * 52,000 = 2083
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