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MMLU / For a class project, a student wants to see if boys and girls at their large…

Problem

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

question

For a class project, a student wants to see if boys and girls at their large high school differ in the number of contacts they have stored in their phone. The student conducts a survey of 50 randomly sampled boys and 40 randomly selected girls, and asks them to report the number of contacts. Which of the following is true about this situation?

choices

  1. Because the population standard deviations are not known and conditions are met, the student shoulduse a two-sample t-test.
  2. Because the sample sizes are different, the student should notuse a two-sample t-test.
  3. Because the sample sizes are both greater than 30, the student should notuse a two-sample t-test.
  4. Because the shape of the population distribution is not known, the student should notuse a two-sample t-test.

subject

high_school_statistics

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Source and history

task_id
43105af4-a64d-5829-a729-87cf98cdb0c3
task_key
all--test--43105af4-a64d-5829-a729-87cf98cdb0c3
task_revision_id
1
config / split
all / test

Official source

initial import