Test of equal or given proportions: Use the “bacteria” data set in R to answer the...
Test of equal or given proportions:
Use the “bacteria” data set in R to answer the question, “did the drug treatment have a significant effect of the presence of the bacteria compared with the placebo?”
Define Ho and Ha.
library(bacteria)
bacteria
View(bacteria)
Homework Answers
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Test of equal or given proportions:
Use the “bacteria” data set in R to answer the...
You may need to use the appropriate technology to answer this question Use the sample data...
You may need to use the appropriate technology to answer this question Use the sample data below to test the hypotheses Ha: not all population proportions are equal where p, is the population proportion of Yes responses for population L Populations Response 1 2 3 Yes 140150 106 No 90 150 114 Find the value of the test statistic. (Round your answer to three decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value = Using a...
You may need to use the appropriate technology to answer this question Use the sample data...
You may need to use the appropriate technology to answer this question Use the sample data below to test the hypotheses Ha: not all population proportions are equal where p, is the population proportion of Yes responses for population L Populations Response 1 2 3 Yes 140150 106 No 90 150 114 Find the value of the test statistic. (Round your answer to three decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value = Using a...
You may need to use the appropriate technology to answer this question Use the sample data...
You may need to use the appropriate technology to answer this question Use the sample data below to test the hypotheses P1P2 P3 Ha: not all population proportions are equal where p, is the population proportion of Yes responses for population i. Populations 1 2 3 155 140 101 105 140 109 Yes No Find the value of the test statistic. (Round your answer to three decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value Using...
3. Consider a Phase II clinical trial designed to investigate the effectiveness of a new drug...
3. Consider a Phase II clinical trial designed to investigate the effectiveness of a new drug to reduce symptoms of asthma in children. A total of n=10 participants are randomized to receive either the new drug or a placebo. Participants are asked to record the number of episodes of shortness of breath over a 1 week period following receipt of the assigned treatment. The data are shown below. Placebo: 7, 2, 10, 5, 12 New Drug: 3, 6, 4, 11,...
You may need to use the appropriate technology to answer this question A researcher in a...
You may need to use the appropriate technology to answer this question A researcher in a university's biology department studied the effect of agriculture contaminants on the stream fish population in northeastern Indiana. Specially-designed traps collected samples of fish at each of four stream locations. A research question was "Did the differences in agricultural contaminants found at the four locations alter the proportion of the fish population by gender?" Suppose observed frequencies were as follows Stream Locations Gender ABIC D...
You may need to use the appropriate technology to answer this question. Use the sample data...
You may need to use the appropriate technology to answer this question. Use the sample data below to test the hypotheses H0: p1 = p2= p3 Ha: not all population proportions are equal where p is the population proportion of Yes responses for population i. Populations Response 1 2 3 155 140 101 Yes No 105 140 109 Find the value of the test statistic. (Round your answer to three decimal places.) Find the p-value. (Round your answer to four...
Quel He Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea,...
Quel He Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 39 of the 46 subjects treated with echinacea developed rhinovirus infections. In a placebo group. 73 of the 90 subjects developed rhinovirus infections. Use a 0.01 significance level to test the claim that echinacea has an effect on rhinovirus infections. Complete parts (a) through (c) below. a. Test the claim using a hypothesis test. Consider the first sample to be the sample of subjects...
You can assume that the data followed all three assumptions for ANOVA analysis, namely, independence, equal...
You can assume that the data followed all three assumptions for ANOVA analysis, namely, independence, equal variance, and normality. Placebo Dose2 Dose5 4.3 3.7 1.3 9.1 3.5 1 6.1 5.2 0.7 4.7 9.3 1.2 4.1 6.7 1.3 7.8 5.2 1.6 5.7 4.1 2.4 5.8 5.3 1.9 This is my answer to the first part of the question. Based on the results of the one-way ANOVA test, an F value of 21.093being greater than a p-value <0.05, there is a significant...
1. Use a χ2 test to test the claim that in the given contingency table, the row variable and the column variable are ind...
1. Use a χ2 test to
test the claim that in the given contingency table, the row
variable and the column variable are independent.
Responses to a survey question are broken down according to
employment status and the sample results are given below. At the
0.10 significance level, test the claim that response and
employment status are independent.
a. find the test statistic
2. Use a χ2 test to
test the claim that in the given contingency table, the row...
This Question: 1 pt 20 of 35 (12 complete) This Test: 104 pts possible Question Help...
This Question: 1 pt 20 of 35 (12 complete) This Test: 104 pts possible Question Help Treatment Sham determine whether magnets are effective in treating back pain. The results are shown in the table for the treatment (with magnets) group and the sham (or placebo) group. The samples selected from nomally distributed populations, and do not assume that the population Researchers conducted a study 17 17 standard devlations are equal Comolete narts (al and (b) helow Use a 0 05...
You may need to use the appropriate technology to answer this question Use the sample data below to test the hypotheses Ha: not all population proportions are equal where p, is the population proportion of Yes responses for population L Populations Response 1 2 3 Yes 140150 106 No 90 150 114 Find the value of the test statistic. (Round your answer to three decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value = Using a...
You may need to use the appropriate technology to answer this question Use the sample data below to test the hypotheses Ha: not all population proportions are equal where p, is the population proportion of Yes responses for population L Populations Response 1 2 3 Yes 140150 106 No 90 150 114 Find the value of the test statistic. (Round your answer to three decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value = Using a...
You may need to use the appropriate technology to answer this question Use the sample data below to test the hypotheses P1P2 P3 Ha: not all population proportions are equal where p, is the population proportion of Yes responses for population i. Populations 1 2 3 155 140 101 105 140 109 Yes No Find the value of the test statistic. (Round your answer to three decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value Using...
You may need to use the appropriate technology to answer this question A researcher in a university's biology department studied the effect of agriculture contaminants on the stream fish population in northeastern Indiana. Specially-designed traps collected samples of fish at each of four stream locations. A research question was "Did the differences in agricultural contaminants found at the four locations alter the proportion of the fish population by gender?" Suppose observed frequencies were as follows Stream Locations Gender ABIC D...
You may need to use the appropriate technology to answer this question. Use the sample data below to test the hypotheses H0: p1 = p2= p3 Ha: not all population proportions are equal where p is the population proportion of Yes responses for population i. Populations Response 1 2 3 155 140 101 Yes No 105 140 109 Find the value of the test statistic. (Round your answer to three decimal places.) Find the p-value. (Round your answer to four...
Quel He Rhino viruses typically cause common colds. In a test of the effectiveness of echinacea, 39 of the 46 subjects treated with echinacea developed rhinovirus infections. In a placebo group. 73 of the 90 subjects developed rhinovirus infections. Use a 0.01 significance level to test the claim that echinacea has an effect on rhinovirus infections. Complete parts (a) through (c) below. a. Test the claim using a hypothesis test. Consider the first sample to be the sample of subjects...
1. Use a χ2 test to
test the claim that in the given contingency table, the row
variable and the column variable are independent.
Responses to a survey question are broken down according to
employment status and the sample results are given below. At the
0.10 significance level, test the claim that response and
employment status are independent.
a. find the test statistic
2. Use a χ2 test to
test the claim that in the given contingency table, the row...
This Question: 1 pt 20 of 35 (12 complete) This Test: 104 pts possible Question Help Treatment Sham determine whether magnets are effective in treating back pain. The results are shown in the table for the treatment (with magnets) group and the sham (or placebo) group. The samples selected from nomally distributed populations, and do not assume that the population Researchers conducted a study 17 17 standard devlations are equal Comolete narts (al and (b) helow Use a 0 05...
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