At the 0.05 level of significance, does the data provide evidence to suggest that the mean number of TV sets per household has decreased since 2010?
According to old reports by the Neilsen Company (HERE), in 2010 the average American home had 2.93
TV sets per household. Suppose a researcher at the United States Office of Consumer Affairs wants to
determine if the
The researcher randomly samples 20 households and recorded the number of TV sets per household:
1 6 3 1
2 1 3 1
3 2 1 0
1 2 1 6
5 1 0 3
At the 0.05 level of significance, does the data provide evidence to suggest that the mean number of TV
sets per household has decreased since 2010?
Step 1: Define the parameter & setup the test
Step 2: State the Level of Significance
Step 3: Find the value of the Test Statistics
Step 4: Find P-Value OR Find Critical Value
Step 5: State Conclusion and why
Step by step
Solved in 3 steps with 16 images
