a) What is the response variable in this study? What is the explanatory variable? O A. The response variable is the time to graduate. The explanatory variable is the use of community college or not. O B. The response variable is the number of students. The explanatory variable is the time to graduate. OC. The response variable is the time to graduate. The explanatory variable is the number of students. O D. The response variable is the use of community college or not. The explanatory variable is the time to graduate. b) Explain why this study can be analyzed using inference of two sample means. Determine what qualifications are met to perform the hypothesis test about the difference between two means. Select all that apply. O A. The population is given to be normally distributed. O B. The sample sizes are large (both greater than or equal to 30). O c. The sample sizes are not more than 5% of the population. O D. The samples are independent. O E. The samples can be reasonably assumed to be random. c) Does the evidence suggest that community college transfer students take longer to attain a bachelor's degree? Use an a = 0.05 level of significance. Perform a hypothesis test. Determine the null and alternative hypotheses. O A. Ho: Hcommunity college > Hno transfer: H: Hcommunity college Pno transfer O B. Ho: Hcommunity college = Pno transfer: H: Pcommunity college Pno transfer OC. Ho: Hcommunity college
a) What is the response variable in this study? What is the explanatory variable? O A. The response variable is the time to graduate. The explanatory variable is the use of community college or not. O B. The response variable is the number of students. The explanatory variable is the time to graduate. OC. The response variable is the time to graduate. The explanatory variable is the number of students. O D. The response variable is the use of community college or not. The explanatory variable is the time to graduate. b) Explain why this study can be analyzed using inference of two sample means. Determine what qualifications are met to perform the hypothesis test about the difference between two means. Select all that apply. O A. The population is given to be normally distributed. O B. The sample sizes are large (both greater than or equal to 30). O c. The sample sizes are not more than 5% of the population. O D. The samples are independent. O E. The samples can be reasonably assumed to be random. c) Does the evidence suggest that community college transfer students take longer to attain a bachelor's degree? Use an a = 0.05 level of significance. Perform a hypothesis test. Determine the null and alternative hypotheses. O A. Ho: Hcommunity college > Hno transfer: H: Hcommunity college Pno transfer O B. Ho: Hcommunity college = Pno transfer: H: Pcommunity college Pno transfer OC. Ho: Hcommunity college
Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter7: Distance And Approximation
Section7.3: Least Squares Approximation
Problem 31EQ
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