To test if the use of a particular high flow air filter improves a car's gas mileage, 10 cars were randomly selected. Each car's gas mileage was recorded before and after installing the high flow air filter and these figure are shown below. At the level of .05 significance, find if the data indicates that the use of the high flow air filter significantly improves the gas mileage. After : 35.7 20.3 32.5 27.2 18.8 42.3 37.8 28.4 18.8 28.6 Before : 35.5 19.6 32.6 26.6 17.8 42.5 37.8 27.2 18.4 28.7. diff (d) : 0.2 0.7 -0.1 0.6 1.0 -0.2 0 0.2 0.4 -0.1 Mean of diff : x= 0.27 Standard deviation of diff : sd = 0.4 Which of the following is the correct H0 :
To test if the use of a particular high flow air filter improves a car's gas mileage, 10 cars were randomly selected. Each car's gas mileage was recorded before and after installing the high flow air filter and these figure are shown below. At the level of .05 significance, find if the data indicates that the use of the high flow air filter significantly improves the gas mileage.
After : 35.7 20.3 32.5 27.2 18.8 42.3 37.8 28.4 18.8 28.6
Before : 35.5 19.6 32.6 26.6 17.8 42.5 37.8 27.2 18.4 28.7.
diff (d) : 0.2 0.7 -0.1 0.6 1.0 -0.2 0 0.2 0.4 -0.1
Mean of diff : x= 0.27
Standard deviation of diff : sd = 0.4
Which of the following is the correct H0 :
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 2 images
