Peer’s Post 2

For your response to a classmate (two responses are required, one in each option), solve a classmate’s confidence interval problem using a confidence level not previously used for that specific classmate’s problem. Make sure that you use appropriate terminology to state the problem and explain your solution.

To complete this assignment, review the Discussion Rubric document attached.

Option 2:

Think about a population proportion that you may be interested in and propose a confidence interval problem for this parameter.

For example, you may like to estimate the population proportion of adults in the US who own SUVs. The data could be that you researched online by looking at a local dealership to find that 142 of the 432 vehicles sold are SUVs. You want to calculate a 90% (or another level) confidence interval for the population proportion. Assume a random sample.

Peer’s Post:

I wanted to know how many people that traveled on the main road drove Chevrolet vehicles. I sat at a local shop for two hours and observed 157 vehicles drive past, there were 63 vehicles that were Chevrolet branded, with this information it shows that .401 or 40% of people drove a Chevrolet branded vehicle. My confidence level is 95%.