17. A researcher wants to determine if a 100-person sample of people with insomn

Question

17. A researcher wants to determine if a 100-person sample of people with insomnia sleep better than than is typical for people with insomnia (based on population values) after taking a new pharmaceutical sleep aid. Should she use hypothesis testing or confidence intervals, initially? 18. The t-test for two population means (independent samples) has degrees of freedom equal to the... A. two sample sizes combined. B. two sample sizes combined minus one. C two sample sizes combined minus two. D. two sample sizes combined minus three. 19. Compared to the standard error for two independent samples, the standard error for two related samples will tend to be... A. smaller. B. the same. C. approximately the same. D. large.

Explanation / Answer

17. While for testing the claim that people with insomia sleep better than is typical for people with insomia after taking a new pharmaceutical sleep aid. The reasercher should perform hypothesis testing.

Here we will test the significant of two population means.

18. The t-test for two population means (independent samples) has degrees of freedom is equal to the

C) Two sample sizes combined minus two.

19. Compare to the standard error for two independent samples, the standard error for two related samples will tend to be

A)Smaller.

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

---

---

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