3. A car manufacturer randomly sampled 40 people who bought a car within the last two years and
had them test drive the car's newest model. After driving, they are asked if they prefer this new
model to the car they currently own. Analysis of the results showed that 55% said they prefer the
new model. The manufacturer claims with 95% confidence that the majority of people who
bought a car in the last two years prefer the newest model to the car they currently own. Evaluate
the conclusion.
(1 point)
The conclusion is not accurate because the manufacturer can only claim a majority prefers the newest
model car with 90% confidence.
The conclusion is not accurate because the survey is biased since the participants just finished driving the
new car.
The conclusion is accurate because 55% is greater than 50%, which is a majority.
The conclusion is not accurate because the 95% confidence interval is (0.4, 0.7), which includes values
less than 50%.