A company wants to determine whether its consumer product ratings 0) have change

Question

A company wants to determine whether its consumer product ratings 0) have changed from last year to this year The table belov shows the company's product ratings from eight consumers for last year and this year. At a 30.05. is there enough ewidence to conclude that the ratings have changed? Assume the samples are random and dependent, and the population is normaly distributed. Complete parts (a) through 1 3 4 5 6 7 8 Rating last year) 5 6 4 3 9 9 7 6 Rating (this year) (a) identify the claim and state Ho and Ha The claim is "The product ratings have from last year to this year. Let ud be the hypothesized mean of the us the ratings this year. State Ho and Ha Choose the correct answer below. ncreased o A. Ho: 20 O B. Ho: d ed not changed Ha: H2: Bud 1.895. O B. t

Explanation / Answer

First Image:

Degrees of freedom = n - 1 = 8 - 1 = 7

This is a two tailed test. So,

For a two tailed test with 6 degrees of freedom and 0.05 level of significance,

Critical t = -2.365, 2.365

Option D is correct.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

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