One research study of illegal drug use among 12- to 17-year-olds reported a decrease in use...
One research study of illegal drug use among 12- to 17-year-olds reported a decrease in use (from 11.4% in 1997) to 9.9% now. Suppose a survey in a large high school reveals that, in a random sample of 1,059 students, 95 report using illegal drugs. Use a 0.05 significance level to test the principal's claim that illegal drug use in her school is below the current national average. Find the test statistic. Z = Find the P-value for the found test statistic. P = Now make a conclusion. Choose the correct answer below 1. There is sufficient evidence to support the claim that illegal drug use is below the national average 2. There is not sufficient evidence to support the claim that illegal drug use is below the national average. 3. There is not enough information to make a conclusion
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One research study of illegal drug use among 12- to
17-year-olds reported a decrease in use...
One research study of illegal drug use among 12- to 17-year-olds reported a decrease in use...
One research study of illegal drug use among 12- to 17-year-olds reported a decrease in use (from 11.4% in 1997) to 9.8% now. Suppose a survey in a large high school reveals that, in a random sample of 1,052 students, 95 report using illegal drugs. Use a 0.05 significance level to test the principal's claim that illegal drug use in her school is below the current national average. Formulate the null and alternative hypotheses. Find the test statistic. z= P-value=...
(5 points) A recent poll of 2100 randomly selected 18-25-year-olds revealed that 243 currently use marijuana...
(5 points) A recent poll of 2100 randomly selected 18-25-year-olds revealed that 243 currently use marijuana or hashish. According to a publication, 12.7 % of 18-25-year-olds were current users of marijuana or hashish in 1997. Do the data provide sufficient evidence to conclude that the percentage of 18-25-year-olds who currently use marijuana or hashish has changed from the 1997 percentage of 12.7%? Use a = 0.05 significance level. (Give final answers correct to *four* decimal places) test statistic z =...
Consider a drug testing company that provides a test for marijuana usage. Among 250 tested subjects,...
Consider a drug testing company that provides a test for marijuana usage. Among 250 tested subjects, results from 30 subjects were wrong (either a false positive or a false negative). Use a 0.05 significance level to test the claim that less than 10 percent of the test results are wrong. Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A Ho: p=0.1 H, p<0.1 Ho: p=0.1 IPi1 Hp0.1 Ос. Ho: p<0.1 H, p=0.1 OD....
consider a drug testing company that provides a test for marijuana usage. among 329 tested subjects,...
consider a drug testing company that provides a test for
marijuana usage. among 329 tested subjects, results from 30 were
wrong. Use a 0.05 significance level to test the claim that less
than 10 percent of the results are wrong.
Consider a drug testing company that provides a test for marijuana usage. Among 329 tested subjects, results from 30 subjects were wrong (either a falso positive or a false negative). Use a 0.05 significance level to test the claim that...
In 2001, 5.6% of people used cocaine. This year, a company wishes to use their employment...
In 2001, 5.6% of people used cocaine. This year, a company wishes to use their employment drug screening to test a claim. They take a simple random sample of 2877 job applicants and find that 131 individuals fail the drug test for cocaine. They want to test the claim that the proportion of the population failing the test is lower than 5.6%. Use .05 for the significance level. Round to three decimal places where appropriate. Hypotheses: H o : p...
In 1997, a survey of 900 households showed that 137 of them use e-mail. Use those...
In 1997, a survey of 900 households showed that 137 of them use e-mail. Use those sample results to test the claim that more than 15% of households use e-mail. Use a 0.05 significance level. Use this information to answer the following questions. a.What is the test statistic? b.What is the P-value? c.What is the conclusion? a)There is not sufficient evidence to support the claim that more than 15% of households use e-mail. or b)There is sufficient evidence to support...
Suppose 210 subjects are treated with a drug that is used to treat pain and 51...
Suppose 210 subjects are treated with a drug that is used to treat pain and 51 of them developed nausea. Use a 0.05 significance level to test the claim that more than 20% of users develop nausea. Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho: P=0.20 H:p*0.20 O B. Ho: p=0.20 Hyp<0.20 Oc. Họ p>0.20 Hy: p=0.20 OD. Ho: p=0.20 Hy:p>0.20 Identify the test statistic for this hypothesis test. The test...
Suppose 203 subjects are treated with a drug that is used to treat pain and 55...
Suppose 203 subjects are treated with a drug that is used to treat pain and 55 of them developed nausea. Use a 0.05 significance level to test the claim that more than 20% of users develop nausea. Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho: p=0.20 H:p<0.20 OB. Ho:p>0.20 H: p= 0.20 © C. Ho: p = 0.20 H:p*0.20 OD. Ho: p=0.20 H:p>0.20 Identify the test statistic for this hypothesis test....
Suppose 241 subjects are treated with a drug that is used to treat pain and 55...
Suppose 241 subjects are treated with a drug that is used to treat pain and 55 of them developed nausea. Use a 0.01 significance level to test the claim that more than 20% of users develop nausea. Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is . (Round to three decimal places...
Suppose 213 subjects are treated with a drug that is used to treat pain and 55...
Suppose 213 subjects are treated with a drug that is used to treat pain and 55 of them developed nausea. Use a 0.05 significance level to test the claim that more than 20% of users develop nausea. Identify the test statistic for this hypothesis test The test statistic for this hypothesis test is (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is (Round to three decimal places as...
(5 points) A recent poll of 2100 randomly selected 18-25-year-olds revealed that 243 currently use marijuana or hashish. According to a publication, 12.7 % of 18-25-year-olds were current users of marijuana or hashish in 1997. Do the data provide sufficient evidence to conclude that the percentage of 18-25-year-olds who currently use marijuana or hashish has changed from the 1997 percentage of 12.7%? Use a = 0.05 significance level. (Give final answers correct to *four* decimal places) test statistic z =...
Consider a drug testing company that provides a test for marijuana usage. Among 250 tested subjects, results from 30 subjects were wrong (either a false positive or a false negative). Use a 0.05 significance level to test the claim that less than 10 percent of the test results are wrong. Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A Ho: p=0.1 H, p<0.1 Ho: p=0.1 IPi1 Hp0.1 Ос. Ho: p<0.1 H, p=0.1 OD....
consider a drug testing company that provides a test for
marijuana usage. among 329 tested subjects, results from 30 were
wrong. Use a 0.05 significance level to test the claim that less
than 10 percent of the results are wrong.
Consider a drug testing company that provides a test for marijuana usage. Among 329 tested subjects, results from 30 subjects were wrong (either a falso positive or a false negative). Use a 0.05 significance level to test the claim that...
Suppose 210 subjects are treated with a drug that is used to treat pain and 51 of them developed nausea. Use a 0.05 significance level to test the claim that more than 20% of users develop nausea. Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho: P=0.20 H:p*0.20 O B. Ho: p=0.20 Hyp<0.20 Oc. Họ p>0.20 Hy: p=0.20 OD. Ho: p=0.20 Hy:p>0.20 Identify the test statistic for this hypothesis test. The test...
Suppose 203 subjects are treated with a drug that is used to treat pain and 55 of them developed nausea. Use a 0.05 significance level to test the claim that more than 20% of users develop nausea. Identify the null and alternative hypotheses for this test. Choose the correct answer below. O A. Ho: p=0.20 H:p<0.20 OB. Ho:p>0.20 H: p= 0.20 © C. Ho: p = 0.20 H:p*0.20 OD. Ho: p=0.20 H:p>0.20 Identify the test statistic for this hypothesis test....
Suppose 241 subjects are treated with a drug that is used to treat pain and 55 of them developed nausea. Use a 0.01 significance level to test the claim that more than 20% of users develop nausea. Identify the test statistic for this hypothesis test. The test statistic for this hypothesis test is (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is . (Round to three decimal places...
Suppose 213 subjects are treated with a drug that is used to treat pain and 55 of them developed nausea. Use a 0.05 significance level to test the claim that more than 20% of users develop nausea. Identify the test statistic for this hypothesis test The test statistic for this hypothesis test is (Round to two decimal places as needed.) Identify the P-value for this hypothesis test. The P-value for this hypothesis test is (Round to three decimal places as...
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