A concerned group of citizens wanted to know if the proportion of armed robberies in Texas was differentin 2011 than in 2010. Their research showed that of the 113,231 violent crimes in Texas in 2010, 7,622 ofthem were armed robberies. In 2011, 7,439 of the 104,873 violent crimes were in the armed robberycategory. Test at a 5% significance level.a) The null and alternative hypothesis would be:O Ho:P2010 = P2011H1: P2010 < P2011O Ho: H2010 = H2011H1: H2010 + H2011O Ho: P2010 = P2011H1: P2010 + P2011O Ho: 42010H1: 42010 > H2011H2011O Ho: P2010H1: P2010 > P2011O Ho: H2010H1: 42010 < H2011P2011H2011b) Determine the test statistic. Round to two decimals.c) Find the p-value and round to 4 decimals.P =d) Make a decision.Reject the null hypothesisO Fail to reject the null hypothesise) Write the conclusion.O There is sufficient evidence to support the claim that the proportion of armed robberies is differentin 2011 than 201o.O There is not sufficient evidence to support the claim that the proportion of armed robberies isdifferent in 2011 than 2010.

Answered: Image /qna-images/answer/85c74177-85cc-48d7-9962-59b155c87ef2.jpg

A concerned group of citizens wanted to know if the proportion of armed robberies in Texas was different in 2011 than in 2010. Their research showed that of the 113,231 violent crimes in Texas in 2010, 7,622 of them were armed robberies. In 2011, 7,439 of the 104,873 violent crimes were in the armed robbery category. Test at a 5% significance level. a) The null and alternative hypothesis would be: O Ho:P2010 = P2011 H1:P2010 < P2011 O Ho:H2010 = H2011 H1: H2010 + H2011 O Ho:P2010 = P2011 H1: P2010 + P2011 Ho:µ2010 = H2011 H1: µ2010 > H2011 Ho:P2010 = P2011 H1: P2010 > P2011 Ho:µ2010 = H2011 H1: µ2010 < H2011 b) Determine the test statistic. Round to two decimals. c) Find the p-value and round to 4 decimals. d) Make a decision. O Reject the null hypothesis O Fail to reject the null hypothesis e) Write the conclusion. O There is sufficient evidence to support the claim that the proportion of armed robberies is different in 2011 than 2010. O There is not sufficient evidence to support the claim that the proportion of armed robberies is different in 2011 than 2010.

A concerned group of citizens wanted to know if the proportion of armed robberies in Texas was different in 2011 than in 2010. Their research showed that of the 113,231 violent crimes in Texas in 2010, 7,622 of them were armed robberies. In 2011, 7,439 of the 104,873 violent crimes were in the armed robbery category. Test at a 5% significance level. a) The null and alternative hypothesis would be: O Ho:P2010 = P2011 H1:P2010 < P2011 O Ho:H2010 = H2011 H1: H2010 + H2011 O Ho:P2010 = P2011 H1: P2010 + P2011 Ho:µ2010 = H2011 H1: µ2010 > H2011 Ho:P2010 = P2011 H1: P2010 > P2011 Ho:µ2010 = H2011 H1: µ2010 < H2011 b) Determine the test statistic. Round to two decimals. c) Find the p-value and round to 4 decimals. d) Make a decision. O Reject the null hypothesis O Fail to reject the null hypothesis e) Write the conclusion. O There is sufficient evidence to support the claim that the proportion of armed robberies is different in 2011 than 2010. O There is not sufficient evidence to support the claim that the proportion of armed robberies is different in 2011 than 2010.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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