Liam is conducting a market research study to determine the effectiveness of advertisements on social networking sites. He surveyed a randomly selected group of 2,000 young adults on how likely they are to purchase from a company based on its advertisements on social networking sites. Respondents rated their likelihood to purchase on a scale from 1 to 7, with 1 being "Not at all likely" and 7 being "Definitely." The results are summarized in the bar graph above.**Bar Graph Explanation:**- The vertical axis represents the "Number of Responses," ranging from 0 to 800.- The horizontal axis lists seven response categories: Not at all likely, Very unlikely, Unlikely, Neutral, Likely, Very Likely, and Definitely.- The bar heights indicate the frequency of each response category: - "Not at all likely" has around 200 responses. - "Very unlikely" has about 300 responses. - "Unlikely" has approximately 650 responses. - "Neutral" receives about 350 responses. - "Likely" has about 250 responses. - "Very likely" has around 150 responses. - "Definitely" receives about 50 responses.**Question:**Which of the following statements is NOT true based on the survey results?A) mode = 3B) median = 3C) mean < medianD) 2 < mean < 5

Sample size,n=2000In the study, the respondents rated from 1 to 7, with 1 being "Not at all likely"…

Answered: 3. Number of Responses 800 600- 400 200…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Bank of America’s Consumer Spending Survey collected data on annual credit card charges in seven different categories of expenditures: transportation, groceries, dining out, household expenses, home furnishings, apparel, and entertainment. Using data from a sample of 42 credit card accounts, assume that each account was used to identify the annual credit card charges for groceries (population 1) and the annual credit card charges for dining out (population 2). Using the difference data, the sample mean difference was d= $850, and the sample standard deviation was sd= $1123.a. Formulate the null and alternative hypotheses to test for no difference between the population mean credit card charges for groceries and the population mean credit card charges for dining out.b. Use a .05 level of significance. Can you conclude that the population means dif-fer? What is the p-value?c. Which category, groceries or dining out, has a higher population mean annual credit card charge? What is the…
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