A researcher claims that exactly 40% of all adults in the U.S. use their cell phone for most of their online browsing. You believe that the true proportion is different. To test this, you take a...

Extracted text: A researcher claims that exactly 40% of all adults in the U.S. use their cell phone for most of their online browsing. You believe that the true proportion is different. To test this, you take a simple random sample of 200 adults in the U.S and find that 40% of them use their phone for most of their online browsing. Test at 5% significance. Round to the fourth as needed What's the minimum population size required? 200 How many successes were there? 80 Ho:P o 0.40 HAP o 0.40 Test Statistic: 0.00 P-value: 1.0000 Did something significant happen? Nothing Significant Happened Select the Decision Rule: Fail to Reject the Null v There is not that the proportion of all adults in the U.S. who use their cell phone for most of their online browsing is different than 0.4 v o enough evidence to conclude Build a 95% confidence interval and decide if you can conclude the same. Use your calculator to do this and round to the fourth decimal place. Can we conclude the same as our Hypothesis Test? yes o because the true proportion of U.S. adults that use their cell phones for most of their online browsing Select an answer Select an answer is exactly 0.4 because it's in our interval could be 0.4, but it could also be a proprotion above or below 0.4, we really can't say. The results are inconclusive. is definitively, significantly different that 0.4 because none of our estimated proportions are 0.4