Question

A company wants to determine whether its consumer product ratings (0 - 10) have changed from last year to this year. The table below shows the company's product ratings from eight consumers for last year and this year. Ata = 0.05, is there enough evident lo conclude that the ratings have changed? Assume the samples are random and dependent, and the population is normally distributed. Complete parts (a) through (1) Consumer 1 2 3 4 5 6 7 Rating last year) 5 856 107 Rating (this year) 27 57 843 | 6 (a) Identify the claim and state Ho and H The claim is "The product ratings have changed from last year to this year." Lot be the hypothesized mean of the ratings last yoar minus the ratings this year. State H, and H. Choose the correct answer below. O A HON=0 HH #0 OD. Ho: Hasi H, Hg OB. He: Has0 Ha Ha OE. H: 220 H:HD Oc. Họ g *0 - Và =0 OF. Hy: Aj zd на <a (b) Find the critical value(s) and identify the rejection region's) (Use a comma to separate answers as needed. Type an integer or a decimal. Round to three decimal places as needed.) Identify the rejection region. Choose the correct answer below. O A. t>1.895 OB. I< -2.365 Click to select your answers)

Answer 1

Last answer would be written as

• |t| > 2.365
• 
  The clam is "The product rating have changed from the last year? • A. Hold ²0 Hald to to = -2.385, 2.365 • 22.365 ast t>2.365 or t <-2-365