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MMLU / An experiment is conducted in which the response variable is the average gain in…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

An experiment is conducted in which the response variable is the average gain in participants' performance in the long jump. A two-sample t-test with a 5% level of significance will be used to analyze the results. If all else is kept the same, which of the following descriptions of a possible change in procedure is true?

choices

  1. Change from equal size treatment groups to very different size treatment groups would increase the power of the test.
  2. Change from a 5% significance level to a 1% significance level would increase the power of the test.
  3. Taking more careful measurements to reduce variability in the response would increase the power of the test.
  4. Increasing the sample size would reduce the probability of a Type I error.

subject

high_school_statistics

Discussion

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Source and history

task_id
7f9e96bb-a04d-5e56-a1a4-2ef4408f78ac
task_key
all--test--7f9e96bb-a04d-5e56-a1a4-2ef4408f78ac
task_revision_id
1
config / split
all / test

Official source

initial import