Homework Answers
p=0.45
q=1-0.45 = 0.55
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Question 23 3 pts Large Sample Proportion Problem. Asurvey was conducted on high school marijuana use. Of the 2266 high...
Large Sample Proportion Problem. A survey was conducted on high school marijuana use. Of the 2266...
Large Sample Proportion Problem. A survey was conducted on high school marijuana use. Of the 2266 high school students surveyed, 970 admitted to smoking marijuana at 10 years earlier estimated that 45% of the students had tried marijuana. We want to conduct a hypothesis test to see if the true proportion of high school students who tried marijuana is now less than 45%. Use alpha-.01. What is the test statistic for this test? least once. A study done O (45-4237)/SQRT(.4237.5763)/2266)...
Large Sample Proportion Problem. A survey was conducted on high school marijuana use. Of the 2266...
Large Sample Proportion Problem. A survey was conducted on high school marijuana use. Of the 2266 high school students surveyed, 970 admitted to smoking marijuana at least once. The standard error for a confidence interval for this proportion would be: o It depends upon the Alternative Hypothesis O 1.4281*5719)/SQRT(2266) O 1.4281*.5719)/2266 O SQRT(.4281*.5719)/2266)
Large Sample Proportion Problem. A survey was conducted on high school marijuana use. Of the 2266...
Large Sample Proportion Problem. A survey was conducted on high school marijuana use. Of the 2266 high school students surveyed, 970 admitted to smoking marijuana at least once. A study done 10 years earlier estimated that 45% of the students had tried marijuana. We want to conduct a hypothesis test to see if the true proportion of high school students who tried marijuana is now less than 45%. Use alpha = .01. What is the critical value for this test?...
Question 20 3 pts Large Sample Proportion Problem. A survey was conducted on high school marijuana...
Question 20 3 pts Large Sample Proportion Problem. A survey was conducted on high school marijuana use. Of the 2266 high school students surveyed, 970 admitted to smoking marijuana at least once. A study done 10 years earlier estimated that 45% of the students had tried marijuana. We want to conduct a hypothesis test to see if the true proportion of high school students who tried marijuana is now less than 45%. Use alpha = .01. What is the critical...
Question 21 3 pts Large Sample Proportion Problem. Surveys were conducted in multiple countries and respondents...
Question 21 3 pts Large Sample Proportion Problem. Surveys were conducted in multiple countries and respondents were asked if they felt political news was reported fairly. The data for the United States is that out of 1,000 sampled, 470 indicated yes, they felt political news was reported fairly. Suppose we want to construct a 99% confidence interval. What is the Bound of Error (BOE)? 0.0309 2.576 0.0407 0.4293 to 5107 Question 22 3 pts Large Sample Proportion Problem. Surveys were...
Question 21 3 pts Large Sample Proportion Problem. A survey was conducted on high school marijuana...
Question 21 3 pts Large Sample Proportion Problem. A survey was conducted on high school marijuana use. Of the 2266 high school students surveyed, 970 admitted to smoking marijuana at least once. A study done 10 years earlier estimated that 45% of the students had tried marijuana. We want to conduct a hypothesis test to see if the true proportion of high school students who tried marijuana is now less than 45%. Use alpha = .01. What is the critical...
Question 18 3 pts Small Sample Mean Problem. Each year the Heritage Foundation creates an Index...
Question 18 3 pts Small Sample Mean Problem. Each year the Heritage Foundation creates an Index of Economic Freedom for countries around the word based on assessments of freedom on property rights, corruption, business freedom, and labor freedom, among many others. We have a sample of 31 countries taken from the 2016 data. The following is a summary of this sample. Economic Freedom STEM Leaf 4* 64 509 18 22 24 32 42 5*60 65 74 75 76 77 91...
Question 24 3 pts Large Sample Proportion Problem. Surveys were conducted in multiple countries and respondents...
Question 24 3 pts Large Sample Proportion Problem. Surveys were conducted in multiple countries and respondents were asked if they felt political news was reported fairly. The data for the United States is that out of 1,000 sampled, 470 indicated yes, they felt political news was reported fairly. Suppose we want to determine if the proportion for the U.S. is below.50. What is the standard error for this hypothesis test? 0.4991/SQRT(1,000) O SQRT((.5*.5)/1000) O SQRT((.47*.53)/1000 O Cannot be determined from...
QuesLIUII 24 JPS Large Sample Proportion Problem. Surveys were conducted in multiple countries and respondents were...
QuesLIUII 24 JPS Large Sample Proportion Problem. Surveys were conducted in multiple countries and respondents were asked if they felt political news was reported fairly. The data for the United States is that out of 1,000 sampled, 470 indicated yes, they felt political news was reported fairly. Suppose we want to determine if the proportion for the U.S. is below.50. What is the standard error for this hypothesis test? Cannot be determined from the information given. SORT(1.47*.53)/1000 SQRT((.5*5)/1000) .4991/SQRT(1,000) Question...
Question 18 According to the CDC 2.8% of high school students currently use electronic cigarettes. A...
Question 18 According to the CDC 2.8% of high school students currently use electronic cigarettes. A high school counselor is concerned that the use of e-cigs at her school is higher. A test of the following hypothesis Ho: p = 0.028 Ha: p > 0.028 is conducted using a random sample of 50 students at this school and the null hypothesis is rejected. What conclusion can the counselor make? A. There is not enough evidence that the percent of students...
Large Sample Proportion Problem. A survey was conducted on high school marijuana use. Of the 2266 high school students surveyed, 970 admitted to smoking marijuana at 10 years earlier estimated that 45% of the students had tried marijuana. We want to conduct a hypothesis test to see if the true proportion of high school students who tried marijuana is now less than 45%. Use alpha-.01. What is the test statistic for this test? least once. A study done O (45-4237)/SQRT(.4237.5763)/2266)...
Large Sample Proportion Problem. A survey was conducted on high school marijuana use. Of the 2266 high school students surveyed, 970 admitted to smoking marijuana at least once. The standard error for a confidence interval for this proportion would be: o It depends upon the Alternative Hypothesis O 1.4281*5719)/SQRT(2266) O 1.4281*.5719)/2266 O SQRT(.4281*.5719)/2266)
Large Sample Proportion Problem. A survey was conducted on high school marijuana use. Of the 2266 high school students surveyed, 970 admitted to smoking marijuana at least once. A study done 10 years earlier estimated that 45% of the students had tried marijuana. We want to conduct a hypothesis test to see if the true proportion of high school students who tried marijuana is now less than 45%. Use alpha = .01. What is the critical value for this test?...
Question 20 3 pts Large Sample Proportion Problem. A survey was conducted on high school marijuana use. Of the 2266 high school students surveyed, 970 admitted to smoking marijuana at least once. A study done 10 years earlier estimated that 45% of the students had tried marijuana. We want to conduct a hypothesis test to see if the true proportion of high school students who tried marijuana is now less than 45%. Use alpha = .01. What is the critical...
Question 21 3 pts Large Sample Proportion Problem. Surveys were conducted in multiple countries and respondents were asked if they felt political news was reported fairly. The data for the United States is that out of 1,000 sampled, 470 indicated yes, they felt political news was reported fairly. Suppose we want to construct a 99% confidence interval. What is the Bound of Error (BOE)? 0.0309 2.576 0.0407 0.4293 to 5107 Question 22 3 pts Large Sample Proportion Problem. Surveys were...
Question 21 3 pts Large Sample Proportion Problem. A survey was conducted on high school marijuana use. Of the 2266 high school students surveyed, 970 admitted to smoking marijuana at least once. A study done 10 years earlier estimated that 45% of the students had tried marijuana. We want to conduct a hypothesis test to see if the true proportion of high school students who tried marijuana is now less than 45%. Use alpha = .01. What is the critical...
Question 18 3 pts Small Sample Mean Problem. Each year the Heritage Foundation creates an Index of Economic Freedom for countries around the word based on assessments of freedom on property rights, corruption, business freedom, and labor freedom, among many others. We have a sample of 31 countries taken from the 2016 data. The following is a summary of this sample. Economic Freedom STEM Leaf 4* 64 509 18 22 24 32 42 5*60 65 74 75 76 77 91...
Question 24 3 pts Large Sample Proportion Problem. Surveys were conducted in multiple countries and respondents were asked if they felt political news was reported fairly. The data for the United States is that out of 1,000 sampled, 470 indicated yes, they felt political news was reported fairly. Suppose we want to determine if the proportion for the U.S. is below.50. What is the standard error for this hypothesis test? 0.4991/SQRT(1,000) O SQRT((.5*.5)/1000) O SQRT((.47*.53)/1000 O Cannot be determined from...
QuesLIUII 24 JPS Large Sample Proportion Problem. Surveys were conducted in multiple countries and respondents were asked if they felt political news was reported fairly. The data for the United States is that out of 1,000 sampled, 470 indicated yes, they felt political news was reported fairly. Suppose we want to determine if the proportion for the U.S. is below.50. What is the standard error for this hypothesis test? Cannot be determined from the information given. SORT(1.47*.53)/1000 SQRT((.5*5)/1000) .4991/SQRT(1,000) Question...
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