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Historically, about 53% of the population of a certain country believed that the planet's temperature was rising ("global warming"). A March 2010 poll wanted to determine whether this proportion had changed. The poll interviewed 999 adults in the population, and 569 said they believed that global warming was real. (Assume these 999 adults represented a simple random sample.) Complete parts a through c below. a. What percentage in the sample believed global warming was real in 2010? p=% (Round to one decimal place as needed.) Is this more or less than the historical 53%? more O less b. Test the hypothesis that the proportion of the population who believe global warming is real has changed. Use a significance level of 0.05. What are the null and alternative hypotheses? OA. Ho: p=0.53 H: p 0.53 OB. Ho: p<0.53 H₂ p>0.53 OC. Ho: p=0.53 H₂ p>0.53 OD. Ho: p>0.53 H₂: p<0.53 OE. Ho: p 0.53 Ha p=0.53 Historically, about 53% of the population of a certain country believed that the planet's temperature was rising ("global warming"). A March 2010 poll wanted to determine whether this proportion had changed. The poll interviewed 999 adults in the population, and 569 said they believed that global warming was real. (Assume these 999 adults represented a simple random sample.) Complete parts a through c below. Ha: p>0.53 OD. Ho: p>0.53 H₂: p<0.53 OE. Ho: p 0.53 Ha: p = 0.53 Determine the z-test statistic, using the value for p from part a. z= (Round to two decimal places as needed.) Find the p-value. p-value= (Round to three decimal places as needed.) Do you reject or not reject the null hypothesis? O Reject Ho O Do not reject Ho- c. Choose the correct interpretation. OA. In 2010, the percentage of the population who believe global warming is real has not changed from the historical level of 53%. OB. In 2010, the percentage of the population who believe global warming is real is significantly different from 53%.

Historically, about 53% of the population of a certain country believed that the planet's temperature was rising ("global warming"). A March 2010 poll wanted to determine whether this proportion had changed. The poll interviewed 999 adults in the population, and 569 said they believed that global warming was real. (Assume these 999 adults represented a simple random sample.) Complete parts a through c below. a. What percentage in the sample believed global warming was real in 2010? p=% (Round to one decimal place as needed.) Is this more or less than the historical 53%? more O less b. Test the hypothesis that the proportion of the population who believe global warming is real has changed. Use a significance level of 0.05. What are the null and alternative hypotheses? OA. Ho: p=0.53 H: p 0.53 OB. Ho: p<0.53 H₂ p>0.53 OC. Ho: p=0.53 H₂ p>0.53 OD. Ho: p>0.53 H₂: p<0.53 OE. Ho: p 0.53 Ha p=0.53 Historically, about 53% of the population of a certain country believed that the planet's temperature was rising ("global warming"). A March 2010 poll wanted to determine whether this proportion had changed. The poll interviewed 999 adults in the population, and 569 said they believed that global warming was real. (Assume these 999 adults represented a simple random sample.) Complete parts a through c below. Ha: p>0.53 OD. Ho: p>0.53 H₂: p<0.53 OE. Ho: p 0.53 Ha: p = 0.53 Determine the z-test statistic, using the value for p from part a. z= (Round to two decimal places as needed.) Find the p-value. p-value= (Round to three decimal places as needed.) Do you reject or not reject the null hypothesis? O Reject Ho O Do not reject Ho- c. Choose the correct interpretation. OA. In 2010, the percentage of the population who believe global warming is real has not changed from the historical level of 53%. OB. In 2010, the percentage of the population who believe global warming is real is significantly different from 53%.

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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Historically, about 53% of the population of a certain country believed that the planet's temperature was rising ("global warming"). A March 2010 poll wanted to determine whether this proportion had changed. The poll interviewed 999 adults in the population, and 569 said they believed that global warming was real. (Assume these 999 adults represented a simple random sample.) Complete parts a through c below. a. What percentage in the sample believed global warming was real in 2010? p=% (Round to one decimal place as needed.) Is this more or less than the historical 53%? more O less b. Test the hypothesis that the proportion of the population who believe global warming is real has changed. Use a significance level of 0.05. What are the null and alternative hypotheses? OA. Ho: p=0.53 H: p 0.53 OB. Ho: p<0.53 H₂ p>0.53 OC. Ho: p=0.53 H₂ p>0.53 OD. Ho: p>0.53 H₂: p<0.53 OE. Ho: p 0.53 Ha p=0.53
Transcribed Image Text:Historically, about 53% of the population of a certain country believed that the planet's temperature was rising ("global warming"). A March 2010 poll wanted to determine whether this proportion had changed. The poll interviewed 999 adults in the population, and 569 said they believed that global warming was real. (Assume these 999 adults represented a simple random sample.) Complete parts a through c below. a. What percentage in the sample believed global warming was real in 2010? p=% (Round to one decimal place as needed.) Is this more or less than the historical 53%? more O less b. Test the hypothesis that the proportion of the population who believe global warming is real has changed. Use a significance level of 0.05. What are the null and alternative hypotheses? OA. Ho: p=0.53 H: p 0.53 OB. Ho: p<0.53 H₂ p>0.53 OC. Ho: p=0.53 H₂ p>0.53 OD. Ho: p>0.53 H₂: p<0.53 OE. Ho: p 0.53 Ha p=0.53
Historically, about 53% of the population of a certain country believed that the planet's temperature was rising ("global warming"). A March 2010 poll wanted to determine whether this proportion had changed. The poll interviewed 999 adults in the population, and 569 said they believed that global warming was real. (Assume these 999 adults represented a simple random sample.) Complete parts a through c below. Ha: p>0.53 OD. Ho: p>0.53 H₂: p<0.53 OE. Ho: p 0.53 Ha: p = 0.53 Determine the z-test statistic, using the value for p from part a. z= (Round to two decimal places as needed.) Find the p-value. p-value= (Round to three decimal places as needed.) Do you reject or not reject the null hypothesis? O Reject Ho O Do not reject Ho- c. Choose the correct interpretation. OA. In 2010, the percentage of the population who believe global warming is real has not changed from the historical level of 53%. OB. In 2010, the percentage of the population who believe global warming is real is significantly different from 53%.
Transcribed Image Text:Historically, about 53% of the population of a certain country believed that the planet's temperature was rising ("global warming"). A March 2010 poll wanted to determine whether this proportion had changed. The poll interviewed 999 adults in the population, and 569 said they believed that global warming was real. (Assume these 999 adults represented a simple random sample.) Complete parts a through c below. Ha: p>0.53 OD. Ho: p>0.53 H₂: p<0.53 OE. Ho: p 0.53 Ha: p = 0.53 Determine the z-test statistic, using the value for p from part a. z= (Round to two decimal places as needed.) Find the p-value. p-value= (Round to three decimal places as needed.) Do you reject or not reject the null hypothesis? O Reject Ho O Do not reject Ho- c. Choose the correct interpretation. OA. In 2010, the percentage of the population who believe global warming is real has not changed from the historical level of 53%. OB. In 2010, the percentage of the population who believe global warming is real is significantly different from 53%.
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