1. How can cluster sampling be considered like a convenience sampling? 2. In July 2010, a survey conducted by Webroot, a software security firm, found that 32% of the respondents use the same password...

1. How can cluster sampling be considered like a convenience sampling? 2. In July 2010, a survey conducted by Webroot, a software security firm, found that 32% of the respondents use the same password for all of the social networking web sites they log on to (which, by the way, is not the best idea). Suppose a follow-up survey was conducted in late 2010 to investigate if the proportion had changed. Out of a random sample of 225 Internet users, it was found that 86 used the same password for all their social networking web sites. State the null and alternative hypothesis. 3. What are the differences between probability vs. non-probability and cluster vs. stratified samples? Write a multi-paragraph response. 4. How can survey questions lead to non-sampling errors? 5. According to the Mortgage Bankers Association, 10.73% of prime fixed-rate mortgages were in foreclosure or delinquent in the United States during the first quarter of 2010. To validate this claim, a random sample of 700 mortgages was selected, of which 98 were in foreclosure or delinquent. Using a 90% confidence interval, does this sample support the findings of the Mortgage Bankers Association? 6. How does the population mean affect the power of the hypothesis test? 7. When the standard deviation is known and the sample size is less than 30, what characteristic must the population have to calculate a confidence interval? 8. What is the p-value equivalent to with regards to hypothesis testing? 9. How does a Type I error differ from a Type II error? 10. What does a 10% significance level mean? 11. Generation Y has been defined as those individuals who were born between 1981 and 1991. According to the Project on Study Debt, Generation Y students graduating from college averaged $23,200 in debt in 2009. Assume the standard deviation for debt is $7500 per student. What is the probability that the sample mean will be less than $24,000 for a sample size of 30 students?

Jan 15, 2023

SOLUTION.PDF

1. How can cluster sampling be considered like a convenience sampling? 2. In July 2010, a survey conducted by Webroot, a software security firm, found that 32% of the respondents use the same password...

Get Answer To This Question

Related Questions & Answers

Submit New Assignment