school
Acemy

Sampling Distributions for Sample Means

AP Statistics· difficulty 3/5

For a population with σ = 20, σ_x̄ = 4 currently.

What sample size produced this σ_x̄?

  • A

    16

  • B

    5

  • C

    25

    check_circle
  • D

    100

Explanation

σ/√n = 4 → √n = 20/4 = 5 → n = 25.

Want 10 more like this — adaptive to your weak spots?

Practice 10 like thisarrow_forwardPredict my AP score

Related questions

auto_awesomeAll Toolsquestion_answerHomework Q&Amenu_bookAP & SAT PreptimelineLearn Mode