Question 1 (1 point) When construting a confidence interval for a population mea

Question

Question 1 (1 point) When construting a confidence interval for a population mean from a sample with size 17, the number of degrees of freedom for the critical value is O 16 O 18 O 17 Save Question 2 (0.5 points) Which of the following are true statements? The assumptions for interval for the population mean when the population standard deviation is The Student's t distribution can be used to find a confidence interval for the population mean if outliers are present in a small sample When the number of degrees of freedom is small, unknonw are: 1) We have a The Student's t curve is more spread out than the O the Student's t distribution normal curve. is close to the normal simple random sample; 2) Either the sample size is large (>30) or the population is approximately normal. Save

Explanation / Answer

Soltion:-

1) option A. 16

=> Df = n-1 = 17 -1 = 16

2) option A . The assumptions for constructing a confidence interval for the population mean when the population standard deviation is unknonw are: 1) We have a simple random sample; 2) Either the sample size is large (>30) or the population is approximately normal.

=> Sample mean is the approximately normal distribution.

Related Questions

Navigate

• Browse (All)
• Browse Q
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.