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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 34% 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? How many successes were there? Ho: P HA: P Test Statistic: 0 # 0.40 0.40 P-value: Did something significant happen? [Nothing Significant Happened Select the Decision Rule: Fail to Reject the Null There is not enough evidence to conclude 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 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 obecause the true proportion of U.S. adults that use their cell phones for most of their online browsing 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.

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 34% 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? How many successes were there? Ho: P HA: P Test Statistic: 0 # 0.40 0.40 P-value: Did something significant happen? [Nothing Significant Happened Select the Decision Rule: Fail to Reject the Null There is not enough evidence to conclude 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 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 obecause the true proportion of U.S. adults that use their cell phones for most of their online browsing 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.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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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 34% 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? How many successes were there? Ho: P HA: P Test Statistic: P-value: 0 = 0.40 O .40 Did something significant happen? Nothing Significant Happened Select the Decision Rule: Fail to Reject the Null There is not o enough evidence to conclude 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 ✓ Can we conclude the same as our Hypothesis Test? yes 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. because the true proportion of U.S. adults that use their cell phones for most of their online browsing 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.
Transcribed Image 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 34% 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? How many successes were there? Ho: P HA: P Test Statistic: P-value: 0 = 0.40 O .40 Did something significant happen? Nothing Significant Happened Select the Decision Rule: Fail to Reject the Null There is not o enough evidence to conclude 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 ✓ Can we conclude the same as our Hypothesis Test? yes 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. because the true proportion of U.S. adults that use their cell phones for most of their online browsing 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.
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