Homework Answers
Answer 4: Match the scenario to appropriate statistical methods:
To know if the homeless people in CA are on average younger than the homeless people in NY.
use a two-populàtion mean test.
To know if the percentage of homeowners in CA is less than Arizona.
use a two-population proportion test.
To know if more than 42% of voters are in favor a candidate.
use a single-population proportion test.
To know if decrease in COVID-19 cases is linearly a to mandating the use of mask in public places.
use a simple linear regression and test if the slope is equal to 0.
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e Home Question 4 4 pts Match the scenarios to to appropriate statistical methods: To know...
Match the study with the best hypothesis test that could be used to evaluate the research...
Match the study with the best hypothesis test that could be used to
evaluate the research question.Do exercise supplements improve the
effect of training among amateur runners? 112 amateur runners were
enrolled in a study in which they ran using a proven 12-week 5km
race training plan. At the beginning of the 12-week study, they ran
a 5km race, their finishing times were recording; they repeated the
same race at the end of the 12-week study. Half of the enrolled...
Question 10 Background: Name That Scenario: Pet Adoption One important aspect in statistics is to understand...
Question 10 Background: Name That Scenario: Pet Adoption One important aspect in statistics is to understand which statistical methods or procedures are appropriate to use to address the research problem or question of interest. For each description of a research question below, select the one corresponding statistical analysis technique most appropriate for addressing that research question. An employee who has just been put in charge of the pet adoption fundraiser thinks that a personal phone cal to recent adopters asking...
Question 5 4 pts For each of the following studies, select the appropriate method of analyzing...
Question 5 4 pts For each of the following studies, select the appropriate method of analyzing the data. I am interested in comparing three different battery brands to determine if a different exists in how long, on average, the batteries last. Batteries from Duracell, Energizer, and a generic battery brand were all randomly sampled and tested in a variety of electronic devices. The goal is to compare the average battery life of the three brands and, ideally, rank the brands...
QUESTION 7 Recall that the formula to calculate a confidence interval to estimate a population proportion...
QUESTION 7 Recall that the formula to calculate a confidence interval to estimate a population proportion is given by: (statistic + 2 x SE). where SE is the standard error of the statistic and the value of z* determines the confidence level. Suppose you want to estimate the proportion of voters who support Elizabeth Warren for president in 2020 with an 80% confidence interval. Use StatKey to determine the appropriate value of z* 1.282 1.440 1.645 1.960 2.327 QUESTION 8...
For all questions: (a) state the null and alternative hypotheses, (b) conduct appropriate statistical methods with...
For all questions: (a) state the null and alternative hypotheses, (b) conduct appropriate statistical methods with alpha-.05, (c) report your final statistics with a decision regarding the null hypothesis, and (d) summarize your results in your own words. 1. In this era of credit cards there is discussion on whether or not coin use is declining. A professor has been collecting data for years on the number of cents people carry in their pockets or purses and maintains that the...
Choose the proper statistical technique to use for each scenario and match from the list below....
Choose the proper statistical technique to use for each scenario and match from the list below. A) One sample test for a mean B) One sample test for a proportion C) Two sample test for means- independent D) Two sample test for means – paired E) Two sample test for proportions F) Chi square test of independence G) Chi square test for proportions H) One Way Analysis of Variance I) Correlation J) Simple regression K) Multiple regression L) Time series...
please answer questions clearly Part 3: Which Test Should You Use? scenarios. Your task is to determine which statistical test is most appropriate a), and to explain why you chose that statistic...
please answer questions clearly
Part 3: Which Test Should You Use? scenarios. Your task is to determine which statistical test is most appropriate a), and to explain why you chose that statistical test (part b). Consider things variables, scores vs. frequencies, number of groups, and what we know (or don not Below are 8 research Directions: Below are8 to test each research like continuous vs. nominal know) about various populations Your which statistical test to use. There are 12 options...
Q11-Q20. MULTIPLE CHOICE: Choose the Appropriate Methodology. Consider the following statistical methodologies: e) Sample size determination...
Q11-Q20. MULTIPLE CHOICE: Choose the Appropriate Methodology. Consider the following statistical methodologies: e) Sample size determination a) Z-test/CI for a mean b) Z-test/CI for a proportion c) Contingency Table d) Normal distribution calculation f) Linear Regression g) None of the above For the following scenarios below, choose the letter from the list above that corresponds to the method/inference procedure that is most appropriate: 11. Medical researchers followed men for 30 years to determine if there is an association between fish...
Kelang e. 2 IUUIS, J9 Ulules, 15 Selurus. Question Completion Status: QUESTION 6 4 points Save...
Kelang e. 2 IUUIS, J9 Ulules, 15 Selurus. Question Completion Status: QUESTION 6 4 points Save Answer For which of the following scenarios would an Analysis of Variance (ANOVA) be appropriate? Determining if the distribution of party affiliation (Democrat, Republican, Independent) has changed since the last election Determining if the proportion of the population that are left handed is more than 10% Determining whether Income Level (Low, Middle, High) and Credit Score (Poor, Fair, Good, Excellent) are independent Determining if...
Matching Choose the proper statistical technique to use for each scenario from the list below A. ...
need help matching these please. thanks!
Matching Choose the proper statistical technique to use for each scenario from the list below A. One sample test for a mean B. One sample test for a proportion C. Two sample test for means- independent D. Two sample test for means paired E. Two sample test for proportions F. Chi square test of independence G. Chi square test for homogeneity of proportions H. One Way Analysis of Variance I. Correlation J. Simple regression...
Match the study with the best hypothesis test that could be used to
evaluate the research question.Do exercise supplements improve the
effect of training among amateur runners? 112 amateur runners were
enrolled in a study in which they ran using a proven 12-week 5km
race training plan. At the beginning of the 12-week study, they ran
a 5km race, their finishing times were recording; they repeated the
same race at the end of the 12-week study. Half of the enrolled...
Question 10 Background: Name That Scenario: Pet Adoption One important aspect in statistics is to understand which statistical methods or procedures are appropriate to use to address the research problem or question of interest. For each description of a research question below, select the one corresponding statistical analysis technique most appropriate for addressing that research question. An employee who has just been put in charge of the pet adoption fundraiser thinks that a personal phone cal to recent adopters asking...
Question 5 4 pts For each of the following studies, select the appropriate method of analyzing the data. I am interested in comparing three different battery brands to determine if a different exists in how long, on average, the batteries last. Batteries from Duracell, Energizer, and a generic battery brand were all randomly sampled and tested in a variety of electronic devices. The goal is to compare the average battery life of the three brands and, ideally, rank the brands...
QUESTION 7 Recall that the formula to calculate a confidence interval to estimate a population proportion is given by: (statistic + 2 x SE). where SE is the standard error of the statistic and the value of z* determines the confidence level. Suppose you want to estimate the proportion of voters who support Elizabeth Warren for president in 2020 with an 80% confidence interval. Use StatKey to determine the appropriate value of z* 1.282 1.440 1.645 1.960 2.327 QUESTION 8...
For all questions: (a) state the null and alternative hypotheses, (b) conduct appropriate statistical methods with alpha-.05, (c) report your final statistics with a decision regarding the null hypothesis, and (d) summarize your results in your own words. 1. In this era of credit cards there is discussion on whether or not coin use is declining. A professor has been collecting data for years on the number of cents people carry in their pockets or purses and maintains that the...
please answer questions clearly
Part 3: Which Test Should You Use? scenarios. Your task is to determine which statistical test is most appropriate a), and to explain why you chose that statistical test (part b). Consider things variables, scores vs. frequencies, number of groups, and what we know (or don not Below are 8 research Directions: Below are8 to test each research like continuous vs. nominal know) about various populations Your which statistical test to use. There are 12 options...
Q11-Q20. MULTIPLE CHOICE: Choose the Appropriate Methodology. Consider the following statistical methodologies: e) Sample size determination a) Z-test/CI for a mean b) Z-test/CI for a proportion c) Contingency Table d) Normal distribution calculation f) Linear Regression g) None of the above For the following scenarios below, choose the letter from the list above that corresponds to the method/inference procedure that is most appropriate: 11. Medical researchers followed men for 30 years to determine if there is an association between fish...
Kelang e. 2 IUUIS, J9 Ulules, 15 Selurus. Question Completion Status: QUESTION 6 4 points Save Answer For which of the following scenarios would an Analysis of Variance (ANOVA) be appropriate? Determining if the distribution of party affiliation (Democrat, Republican, Independent) has changed since the last election Determining if the proportion of the population that are left handed is more than 10% Determining whether Income Level (Low, Middle, High) and Credit Score (Poor, Fair, Good, Excellent) are independent Determining if...
need help matching these please. thanks!
Matching Choose the proper statistical technique to use for each scenario from the list below A. One sample test for a mean B. One sample test for a proportion C. Two sample test for means- independent D. Two sample test for means paired E. Two sample test for proportions F. Chi square test of independence G. Chi square test for homogeneity of proportions H. One Way Analysis of Variance I. Correlation J. Simple regression...
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