Section 6.1-D Distribution of a Proportion Statistics: Unlocking

Section 6.1-D Distribution of a Proportion Statistics: Unlocking

Section 6.1-D Distribution of a Proportion Statistics: Unlocking the Power of Data Lock5 Review The Central Limit Theorem applies to the distribution of the a) statistic b) parameter c) null value d) data e) standard error Statistics: Unlocking the Power of Data

Lock5 Owned Homes The 2010 census reports that, of all the nations occupied housing units, 65.1% are owned by the occupants. The SE is 0.048. If we were to take random samples of 100 homes, what would be the distribution of ? a) N(0.651, 0.048) b) N(0.048, 0.651) c) N(0, 0.048) d) N(0, 0.651) Statistics: Unlocking the Power of Data Lock5

Bi-Lingual in Oregon The 2010 census reports that 14.6% of the residents of Oregon speak a language other than English at home. If we were to take random samples of 100 residents, what would the standard error of be? a) 0.146 b) 0.0146 c) 0.035 d) 0.0035 Statistics: Unlocking the Power of Data Lock5 Bi-Lingual in Oregon The 2010 census reports that 14.6% of the

residents of Oregon speak a language other than English at home. Recall that SE = 0.035. If we were to take random samples of 100 residents, what would be the distribution of ? a) N(0,0.146) b) N(0,0.035) c) N(0.035,0.146) d) N(0.146,0.035) Statistics: Unlocking the Power of Data Lock5 Section 6.1-CI Confidence Interval for a Proportion

Statistics: Unlocking the Power of Data Lock5 In a random sample of 500 US citizens, 280 plan to vote in the upcoming election. We plan to construct a 90% confidence interval for the proportion of US citizens who plan to vote. What is the sample proportion? A. B. C. D. E. 280 500 56

0.56 1.96 Statistics: Unlocking the Power of Data Lock5 In a random sample of 500 US citizens, 280 plan to vote in the upcoming election. We plan to construct a 90% confidence interval for the proportion of US citizens who plan to vote. What is the value of z*? A. B. C. D. E. 0.56

1.28 1.645 1.96 2.576 Statistics: Unlocking the Power of Data Lock5 In a random sample of 500 US citizens, 280 plan to vote in the upcoming election. We plan to construct a 90% confidence interval for the proportion of US citizens who plan to vote. What is the standard error? A. B. C. D. E.

0.56 500 0.00049 0.0365 0.0222 =0.0222 Statistics: Unlocking the Power of Data Lock5 In a random sample of 500 US citizens, 280 plan to vote in the upcoming election. We plan to construct a 90% confidence interval for the proportion of US citizens who plan to vote. What is the margin of error? A.

B. C. D. E. 0.56 500 0.00049 0.0365 0.0222 CI = statistic margin of error Statistics: Unlocking the Power of Data Lock5 Margin of Error CI: *

For a single proportion, what is the margin of error? a) b) * c) 2 * CI = statistic margin of error Statistics: Unlocking the Power of Data Lock5 Margin of Error n Suppose we want to estimate a proportion with a margin of error of 0.03 with 95% confidence. How large a sample size do we need? (a) (b)

(c) (d) About 100 About 500 About 1000 About 5000 Statistics: Unlocking the Power of Data n Lock5 Section 6.1-HT Hypothesis Test for a Proportion

Statistics: Unlocking the Power of Data Lock5 Baseball Home Field Advantage Of the 2430 Major League Baseball (MLB) games played in 2009, the home team won in 54.9% of the games. If we consider 2009 as a representative sample of all MLB games, is this evidence of a home field advantage in Major League Baseball? (a) Yes (b) No (c) No idea The p-value is very small, so we have very strong evidence of a home

field advantage. Statistics: Unlocking the Power of Data Lock5 Baseball Home Field Advantage Counts are greater than 10 in each category H0 : p = 0.5 Ha : p > 0.5 = ^ 0 0 (1 0 )

= 0.549 0.5 0.049 = =4.86 0.01 0.5(1 0.5) 2430 p-value = 6.2 10-7 Based on this data, there is strong evidence of a home field advantage in major league baseball. Lock5

Statistics: Unlocking the Power of Data In a random sample of 500 US citizens, 280 plan to vote in the upcoming election. We want to test to see if this provides evidence that the proportion of US citizens who plan to vote is greater than half. Is this test: A. B. C. D. Right-tailed Left-tailed Two-tailed No-tailed Statistics: Unlocking the Power of Data

Lock5 In a random sample of 500 US citizens, 280 plan to vote in the upcoming election. We want to test to see if this provides evidence that the proportion of US citizens who plan to vote is greater than half. What is the standard error for the test? A. B. C. D. E. 0.0222 0.0365 0.02236 0.04 0.06329

Statistics: Unlocking the Power of Data We use the null proportion 0.5 in computing the standard error for the test. Lock5 In a random sample of 500 US citizens, 280 plan to vote in the upcoming election. We want to test to see if this provides evidence that the proportion of US citizens who plan to vote is greater than half. What is the test statistic? A. B.

C. D. E. 2.703 25.225 25.045 2.683 0.05 =2.683 Statistics: Unlocking the Power of Data Lock5 In a random sample of 500 US citizens, 280 plan to vote in the upcoming election. We want to test to see if this provides evidence

that the proportion of US citizens who plan to vote is greater than half. The test statistic is z=2.683. What is the p-value? A. B. C. D. E. 0.0072 0.0036 0.036 0.072 0.05 Statistics: Unlocking the Power of Data Lock5

In a random sample of 500 US citizens, 280 plan to vote in the upcoming election. We want to test to see if this provides evidence that the proportion of US citizens who plan to vote is greater than half. What is the conclusion at a 5% level? A. Reject H0 and conclude that more than half of US citizens plan to vote. B. Reject H0 and conclude that it is not true that more than half of US citizens plan to vote. C. Do not reject H0 and conclude that more than half of US citizens plan to vote. D. Do not reject H0 and conclude that it is not true that more than half of US citizens plan to vote. Statistics: Unlocking the Power of Data Lock5

Recently Viewed Presentations

  • Lees Dit Voor Je Aan Je Presentatie Begint Algemeen

    Lees Dit Voor Je Aan Je Presentatie Begint Algemeen

    Voorjaar 2019 * Stand van zaken opvolging visitatie functioneel beheer Toolkit functioneel Beheer (1) Het doel van de toolkit: Het professionaliseren van functioneel beheer dmv het uniformeren van functioneel beheer. ... en Business InformatieManagent (BIM) Opvolging visitatie functioneel beheer ...
  • Designing Effective Assignments

    Designing Effective Assignments

    * * Writing to Learn Focus is not on grammar or organization Low-stakes (not graded or minimal points) * Exploratory writing Some ideas for incorporating exploratory writing In-class writing Out-of-class writing "Shaped exercises" * * Causes for students' reading difficulties...
  • Climate and Stratospheric Ozone during the 20th Century ...

    Climate and Stratospheric Ozone during the 20th Century ...

    From previous studies about the effects after Pinatubo and El Chichon eruption, Alan Robock and colleagues found positive temperature anomalies over much of North America, Europe and Russia. These increases can be observed to some degree in the SOCOL response....
  • Poetry Vocabulary - Summit Hill

    Poetry Vocabulary - Summit Hill

    The central theme of a poem represents its controlling idea. This idea is crafted and developed throughout the poem and can be identified by assessing the poem's rhythm, setting, tone, mood, diction and, occasionally, title. The theme is rarely stated...
  • Sin título de diapositiva

    Sin título de diapositiva

    Using functionalized data from the embedded cost of service study, filed in last rate case, this charge includes: An allocation of Call Center costs. An allocation of Credit & Collections costs . Sum of functionalized costs is divided by forecasted...
  • Benchmarking Research Data Services at Research Institutions  the

    Benchmarking Research Data Services at Research Institutions the

    Research Data Architectures in Research Institutions (RDARI) The Research Data Architectures in Research Institutions Interest Group is primarily concerned with technical architectures for managing research data within universities and other multi-disciplinary research institutions.
  • The Humanistic Approach - San Jose State University

    The Humanistic Approach - San Jose State University

    The Psychology of the Person Chapter 11 Humanistic Approach Naomi Wagner, Ph.D Lecture Outlines Based on Burger, 8th edition * The "Third Force" The Humanistic approach has emerged in the late 1960's, primarily as a reaction to the two major...
  • Two Step Scroll - Amick Racing

    Two Step Scroll - Amick Racing

    One of the D/C terminals is marked with a + sign. The white dots mark the DC voltage or half wave terminals. The two terminals without white dots are AC terminal or full wave. * * * * * The...