The case in Chapter 2 listed 30 questions asked of 150 respondents in the community of Springdale.
Question:
1. Item C in the description of the data collection instrument lists variables 7, 8, and 9, which represent the respondent’s general attitude toward each of the three shopping areas. Each of these variables has numerically equal distances between the possible responses, and for purposes of analysis they may be considered to be of the interval scale of measurement.
a. Determine the point estimate, then construct the 95% confidence interval for π7 = the average attitude toward Springdale Mall. What is the maximum likely error in the point estimate of the population mean?
b. Repeat part (a) for μ8 and μ9, the average attitudes toward Down town and West Mall, respectively.
2. Given the breakdown of responses for variable 26 (sex of respondent), determine the point estimate, then construct the 95% confidence interval for π26 = the population proportion of males. What is the maximum likely error in the point estimate of the population proportion?
3. Given the breakdown of responses for variable 28 (marital status of respondent), determine the point estimate, then construct the 95% confidence interval for π28 = the population proportion in the “single or other” category. What is the maximum likely error in the point estimate of the population proportion?
Fantastic news! We've Found the answer you've been seeking!
Step by Step Answer:
Related Book For
Question Posted: