Part I: Hypothesis Testing and Confidence Intervals (One Sample):
View the step-by-step solution to:

Question

Part I: Hypothesis Testing and Confidence Intervals (One Sample): Exercise

  • A nutrition

laboratory tests 40 “reduced sodium” hot dogs, finding that the mean sodium content is 310 mg, with a standard deviation of 36 mg.  Find a 95% confidence interval for the mean sodium content of this brand of hot dog.  Be sure to check all necessary assumptions and conditions, and interpret your interval within the context of the problem.

 

 

  • Conduct a hypothesis test at the .025 level as to whether the mean sodium content level is 300mg. Provide the: H0, Ha, test statistic and approximate P-value. Interpret your decision about the hypotheses in the context of the claim.

 

 

 

 

Top Answer

Attached is a detailed explanation... View the full answer

stats.pdf

Sign up to view the full answer

Other Answers

=310-1.96*(36/SQRT(40)) 298.8435 =310+1.96*(36/SQRT(40)) 321.1565 I am 95% confident that my estimated mean sodium... View the full answer

a) 95% confidence interval = (xbar +/- t*s/Sqrt(n)) = (310 +/- 2.0223*36/Sqrt(40)) =(310 +/- 11.5134) = ( 298.4866, 321.5134... View the full answer

Part (a) Confidence Interval Estimate for the Mean Data Sample Standard Deviation 36 Sample Mean 310 Sample Size 40... View the full answer

Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.

  • -

    Study Documents

    Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

    Browse Documents
  • -

    Question & Answers

    Get one-on-one homework help from our expert tutors—available online 24/7. Ask your own questions or browse existing Q&A threads. Satisfaction guaranteed!

    Ask a Question