EBK BUSINESS STATISTICS
7th Edition
ISBN: 8220102743984
Author: STEPHAN
Publisher: PEARSON
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Researchers examined the relationship between interpersonal violence and health in college-age women. The researchers administered a psychological distress questionnaire which produced a score on a scale of 0-12. What would be an appropriate measure of central tendency to consider for this variable?
In this paper, the authors explore the outness and identity disclosure for queer and trans students of Color in college context. Their data came from an online survey that was distributed via email and social media, targeting college graduates who were LGBTQ. For this Paper, their analysis focused on students of Color. The full study involves quantitative analysis as well as qualitative analysis of the narrative data from participants. The focus of the ANOVA analysis was to determine if there were differences in levels of outness between the various racial identities among queer and trans students of color. in the qualitative analysis the authors seek to understand those differences and the social and institutional conditions that surround decisions about gender and sexual identity disclosure for students of color.
the researchers here were trying to address the following question with their analysis: Where there significant differences in levels out outness between students of Color…
Infusionsoft conducted a study to explore the attitudes, behaviors, and challenges that small businesses face related to sales and marketing. Small business owners were categorized by the amount they spend per month on marketing activities as well as the attitudinal segment to which they belong. The results were organized into the following table.
At the 0.05 level of significance, is there evidence of a significant relationship between the amount spent per month on marketing activities and attitudinal segment?
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- • Facilitators of career guidance claim that 60% of the participants prefer to take Psychology in college. In a career guidance seminar, 30 participants were asked what they intend to take in college and it was found out that only 16 of them would like to enrol Psychology in college. Is the data an evidence to support the facilitators' claim at 10% level of significance? The mean number of sick days an employee takes per year is believed to be about ten. Members of a personnel department do not believe this figure. They randomly survey eight employees. The number of sick days they took for the past year are as follows: 7; 4; 15; 3; 11; 12; 6; 8. Should the personnel team believe that the mean number is ten at a = 0.05? (Use p-value to to discuss the results)arrow_forwardA case-control (or retrospective) study was conducted to investigate a relationship between the colors of helmets worn by motorcycle drivers and whether they are injured or killed in a crash. Results are given in the accompanying table. Using a 0.05 significance level, test the claim that injuries are independent of helmet color. Black; White; Yellow; Red; Blue Controls (not injured) 500; 355; 32; 173; 79 Cases (injured or killed) 220; 115; 9; 71; 38arrow_forwardAnalyze the relationship between respondents’ marital status (MARITAL) and whether they believe it is alright for a couple to live together without intending to get married (COHABOK) using crosstabulation. Which marital status category is most disapproving of nonmarital cohabitation? Which marital status category is most approving of nonmarital cohabitation? Is the relationship between marital status and attitude toward nonmarital cohabitation statistically significant at the .05 level? Compute and interpret an appropriate measure of association for this relationship. Most disapprove: married – 54.9% Most approve: tied married + never married – 35.3% Difference: 19.6% Significance level: can you find the significance level?arrow_forward
- An online dating company wants to investigate perceptions of the services they offer. Two independent research companies collect data and ask several questions of a sample of individuals who identify as "single." Specifically, they want to determine at a 5% significance level if more than half of single people answer "yes" to the question, "Do you think that online dating is right for you?" The results for each researcher appear in the following table. Company A Company B P-value = 0.021 P-value = 0.063 "At the 5% significance level, the data provide convincing evidence that more than half of single people believe that online dating is right for them." "At the 5% significance level, the data do not provide convincing evidence that more than half of single people believe that online dating is right for them." Part A: Identify at least two reasons why the companies came up with different P-values. Part B: A researcher at Company B revisits the analysis and instead concludes the…arrow_forwardA case-control (or retrospective) study was conducted to investigate a relationship between the colors of helmets worn by motorcycle drivers and whether they are injured or killed in a crash. Results are given in the accompanying table. Using a 0.05 significance level, test the claim that injuries are independent of helmet color.arrow_forwardThe researchers hypothesised that people who receive an audiovisual presentation will have a different mean level of recall of ad information as those who receive only the visual aspects of the ad. What significance test should the researchers use for testing their hypothesis?arrow_forward
- Identify the null and alternative hypotheses. Ho The sex of the respondent and the choice for the cause of global warming are independent. H₁: The sex of the respondent and the choice for the cause of global warming are dependent. Compute the test statistic. 1.285 (Round to three decimal places as needed.) Find the critical value(s). 9.210 (Round to three decimal places as needed. Use a comma to separate answers as needed.) What is the conclusion based on the hypothesis test? Fail to reject Ho. There is not sufficient evidence to warrant rejection of the claim that the sex of the respondent is independent of the choice for the cause of global warming. Men and women to agree. appeararrow_forwardA poll was conducted to investigate opinions about global warming. The respondents who answered yes when asked if there is solid evidence that the earth is getting warmer were then asked to select a cause of global warming. The results are given in the accompanying data table. Use a 0.01 significance level to test the claim that the sex of the respondent is independent of the choice for the cause of global warming. Do men and women appear to agree, or is there a substantial difference? Male Female Human activity Natural patterns Don't know 139 156 310 335 36 34 Click here to view the chi-square distribution table. Identify the null and alternative hypotheses. Ho: The sex of the respondent and the choice for the cause of global warming are independent. H,: The sex of the respondent and the choice for the cause of global warming are dependent. Compute the test statistic. (Round to three decimal places as needed.)arrow_forwardA Bloomberg Businessweek subscriber study asked, "In the past 12 months, when traveling for business, what type of airline ticket did you purchase most often?" A second question asked if the type of flight was domestic or international travel. Sample data obtained are shown in the following table. Type of Ticket First Class 102.49 Business Class Economy Class a. Using a 0.05 level of significance, is the type of ticket purchased independent of the type of flight? Ho: Type of ticket purchased is independent of the type of flight Ha: Type of ticket purchased is not independent of the type of flight Compute the value of the X² test statistic (to 2 decimals). Type of Flight Domestic International 27 93 515 24 123 131arrow_forward
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