Additional Information and Full Hypothesis Test Examples · Example 2
A college football coach records the mean weight that the players can bench press as 275 pounds, with a standard deviation of 55 pounds. Three of the players thought that the mean weight was more than that amount. They asked 30 of their teammates for their estimated maximum lift on the bench press exercise. The data ranged from 205 pounds to 385 pounds. The actual different weights were (frequencies are in parentheses)
• 205(3)
• 215(3)
• 225(1)
• 241(2)
• 252(2)
• 265(2)
• 275(2)
• 313(2)
• 316(5)
• 338(2)
• 341(1)
• 345(2)
• 368(2)
• 385(1)
.
Conduct a hypothesis test using a 2.5% level of significance to determine if the bench press mean is more than 275 pounds.
Its source prints no answer for this problem, so there's nothing to check against.
OpenStax, Introductory Statistics 2e · §9.5 Additional Information and Full Hypothesis Test Examples · Example 2
No hints for this one.
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.