The correct hypothesis that Mifrin is testing is: Null Hypothesis (H0): The mean time to relief for headache sufferers is greater than or equal to 3.5 minutes. Alternative Hypothesis (H1): The mean time to relief for headache sufferers is less than 3.5 minutes.
Added by Rebecca D.
Step 1
5 minutes. This means that Mifrin is testing whether the average time it takes for headache sufferers to experience relief is at least 3.5 minutes. Show more…
Show all steps
Close
Your feedback will help us improve your experience
Kari Hasz and 93 other Intro Stats / AP Statistics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
A researcher is testing a new painkiller that claims to relieve pain in less than 15 minutes, on average. A random sample of 49 painkillers were tested and the mean time was 13 minutes. Suppose the population standard deviation is 7 and the test is conducted at α=0.05. State the null and alternate hypothesis Test this hypothesis Use the critical value approach Conclusion: Use the p value approach What is your conclusion? What is a type 1 error? What is a type 2 error?
Kari H.
The director of research and development is testing a new medicine. She wants to know if there is evidence at the 0.02 level that the medicine relieves pain in more than 340 seconds. For a sample of 53 patients, the mean time in which the medicine relieved pain was 347 seconds. Assume the population standard deviation is 18 . Make the decision to reject or fail to reject the null hypothesis.
Hoan N.
A researcher is interested in testing the claim that a pain medication reduces pain on average in less than 21 minutes after taking the dosage. To test this claim, at the 2.5% significance level, the researcher collects the following data on a sample of 35 patients who took the pain medication and recorded the time for the medication to take effect. The following is the data from this study: Sample size =35 patients Sample mean =20.26 minutes From past data, it is known that the population standard deviation is 3.5 minutes. Identify the null and alternative hypothesis for this study by filling in the blanks with the correct symbol (=,≠,<, or > to represent the correct hypothesis.) Provide your answer below: null hypothesis : alternative hypothesis :
Ana Carolina D.
Recommended Textbooks
Elementary Statistics a Step by Step Approach
The Practice of Statistics for AP
Introductory Statistics
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD