Question

ase answer the following set of questions, based on the information provided below iarry Coffee some locations in Denton The rating is based on a Likert scale of 1 to 7 (with 1 . "not interested' and 7-strongly interested. The surve show that the average rating is 6.0 with a standard deviation of 1.8. The company will approve the new dr at chosen locations if the true mean rating is over 4.5. Co. plan to introduce a new drink option, such as England Black tea, alongside its well-known area. The company managers randomly selected 41 customers to rate their new d 5. What is the Null hypothesis for testing whether the new drink option is approved at chosen locations in De E, H, μ s 4.5 6. What is the calculated value of the test statistic? A. 1.09 B. 4.53 C. 5.98 D. 5.34 E. 1.83 7. What is the rejection region for testing at the 0.05 level of significance? A. t>2.045 B. t>2.021 C. t>1.765 D. t>1.684 E. t>1.303

Answer 1

5)

H0 : mu < = 4.5

option E)

6)

t = ( x -mean)/(s/sqrt(n))
= ( 6 - 4.5)/(1.8/sqrt(41))
= 5.34

Option D)

7)

t > 1.684
Option D)