Sampling Distributions for Sample Means

AP Statistics· difficulty 4/5

For population N(100, 15) and n = 25, P(x̄ > 105) ≈

  • A

    0.05

    check_circle
  • B

    0.16

  • C

    0.50

  • D

    0.10

Explanation

SE = 15/5 = 3; z = 5/3 ≈ 1.67 → P ≈ 0.0475.

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