A researcher with the Department of Education followed a cohort of students who graduated from high school in a certain year , monitoring the progress the students*
made toward completing a bachelor's degree . One aspect of his research was to determine whether students who first attended community college took longer to attain
a bachelor's degree than those who immediately attended and remained at a 4 - year institution . The data in the table attached below summarize the results of his study .
Complete parts al through & ) below .
Click here to view the sample data .
Click here to view Student's +- distribution table*
a ) What is the response variable in this study ? What is the explanatory variable ?
WA. The response variable is the time to graduate . The explanatory variable is the use of community college or not .
~) B . The response variable is the use of community college or not . The explanatory variable is the time to graduate .
CC. The response variable is the number of students . The explanatory variable is the time to graduate .
~` D. The response variable is the time to graduate . The explanatory variable is the number of students .
6 ) Explain why this study can be analyzed using inference of two sample means . Select all that apply .
J A. The sample sizes are not more than 5% of the population .
J B . The samples are independent .
DE. The sample sizes are large ( both greater than or equal to 301.
~] D . The samples can be reasonably assumed to be random . E . The population is given to be normally distributed .
Click to select your answer ('s ) .