A researcher knows that \"maternal attachment\" (MA) scores of 18 month old todd

Question

A researcher knows that "maternal attachment" (MA) scores of 18 month old toddlers who were breastfed is normally distributed with mu = 7.5 and sigma = 1.2. High scores indicate greater maternal attachment with the MA test; the maximum score is 10. She speculates that 18 month old toddlers who ate not breastfed will differ in terms of their MA scores from those who were breastfed. With a sample of N = 20 non-breastfed toddlers, the researcher obtained the MA scores below. MA scores of non - breastfed toddlers: 8, 5, 4, 3, 7, 2, 3, 7, 9, 4, 6, 8, 2, 8, 8, 9, 6, 7, 7, 5 Which of the following are the correct statements of the null and alternate hypotheses, H_0 and H_A? H_0 mu = 7.5 and H_A: mu notequalto 7.5 H_0 mu notequalto 7.5 and H_A: mu = 7.5 H_0 mu > 7.5 and H_A: mu lessthanorequalto 7.5 H_0 mu greaterthanorequalto 7.5 and H_A: mu

Explanation / Answer

Solution:-

While writing the null and alternate hypothesis we should be careful that null hypothesis always contain equal to sign, there can be another sign along with equal to sign, alternate sign always contain single sign, it can be greater than, less than and unequal sign.

Null hypothesis: HO : = 0 = 7.5
Alternative hypothesis:HA: 7.5

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

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