50f 15 (0 complete) This C This Question: 1 pt else changes.) State whether each

Question

50f 15 (0 complete) This C This Question: 1 pt else changes.) State whether each of the following changes would make a confidence interval wider or narrower. (Assume that nothing Changing from a 95% confidence level to a 90% confidence level. b. Changing from a sample size of 300 to a sample size of 25. c. Changing from a standard deviation of 15 pounds to a standard deviation of 25 pounds Click the icon to view the t-table. a. How will changing frorm a 95% confidence level to a 90% confidence level affect the width of the confidence interval? O A. The interval will become wider. B. The interval will become narrower. ° C. This change will not affect the width of the interval. b. How will changing from a sample size of 300 to a sample size of 25 affect the width of the confidence interval? O A. The interval will become wider. O B. The interval will become narrower C. This change will not affect the width of the interval. c. How will changing from a standard deviation of 15 pounds to a standard deviation of 25 pounds affect the width of the confidence intervai? 0 A. The interval will become narrower. OR The intanral will herome widor Click to select your answer. 29

Explanation / Answer

1. B is the right answer. higher the confidence, more the width of interval

2. A, more the sample size, smaller the interval

3. B, more than standard deviation, more the width

Related Questions

Navigate

• Browse (All)
• Browse 5
• Subjects

---