Lemma
MediumHypothesis testing
OpenStax, Introductory Statistics 2e §9.5 Additional Information and Full Hypothesis Test Examples · Exercise 56 · Statistics · Hypothesis testing

Additional Information and Full Hypothesis Test Examples · Exercise 56

Instructions: For the following ten exercises,
Hypothesis testing: For the following ten exercises, answer each question.

The student academic group on a college campus claims that first-year students study at least 2.5 hours per day, on average. One Introduction to Statistics class was skeptical. The class took a random sample of 30 first-year students and found a mean study time of 137 minutes with a standard deviation of 45 minutes. At α = 0.01 level, is the student academic group’s claim correct?

~8 minWritten answer · check your work with Lemma

OpenStax, Introductory Statistics 2e · §9.5 Additional Information and Full Hypothesis Test Examples · Exercise 56

Stuck? A gentle nudge

No hints for this one.

Something off?
Workspace
Your working

Check your full solution

Attach photos of your pages (up to 3) or one PDF — or check what you typed above. Lemma reads the work and verifies the reasoning, not just the answer.

Your first check today doesn't need an account.

Your photos and PDFs are read once and not stored — only the transcription is kept.