OpenStax, Statistics §9.5 Additional Information and Full Hypothesis Test Examples · Exercise 55 · Statistics · Hypothesis testing
Additional Information and Full Hypothesis Test Examples · Exercise 55
Hypothesis testing: For the following 10 exercises, answer each question.
The student academic group on a college campus claims that freshman 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 freshman 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?
OpenStax, Statistics · §9.5 Additional Information and Full Hypothesis Test Examples · Exercise 55
Stuck? A gentle nudge
No hints for this one.
Your working
Check your full solution
Upload photos of your handwritten work or a PDF, and Lemma will read it and tell you whether it's right — and where it first goes wrong if not.