Answer:
(5.2591, 9.3531)
Step-by-step explanation:
given that the International Air Transport Association surveys business travelers to develop quality ratings for transatlantic gateway airports.
Ratings are from 1 to 10
the readings are
7 7 3 8 4 4 4 5 5 5 5 4 9 10 9 9 8 10 4 5 4 10 10 10 11 4 9 7 5 4 4 5 5 4 3 10 10 4 4 8 7 7 4 9 5 9 4 4 4 4
Mean = 7.3061
Std deviatin = 7.3100
Std error = [tex]\frac{7.310}{\sqrt{49} } \\=1.0443[/tex]
95%,confidence interval = [tex]7.3061 ±2.047 \\=(5.2591, 9.3531)[/tex]