To select 10 students our of the class of 40 students,

To select 10 students our of the class of 40 students, 40 names are placed in a hat and 10 names are drawn out of the hat. What type of sample is this? 
A. Simple Random Sample 
B. Stratified Random Sample 
C. Multistage Sample 
D. Systematic Random Sample 
E. Cluster Sample
An experiment investigated the effect of length and repetition of TV ads on students choosing to eat at Del Taco. All 60 students watched a 40-minute television program that included ads for Del Taco. Some students saw a 30-second commerical; others a 90-second commerical. The same commerical was shown either 1, 3, or 5 times during the program. After the viewing, each student was asked to rate their craving for Del Taco on a scale of 0 to 10. What are the subjects of this experiment? 
A. 60 students 
B. 40-minute television program 
C. effect of length and repetion of TV ads 
D. 1, 3, or 5 commercials during the 40-minute television program 
E. craving for Del Taco on a scale of 0 to 10
For the Del Taco experiment, what is the response variable? 
A. 1, 3, or 5 commercials during the 40-minute television program 
B. 60 students 
C. 30-second and 90-second commericials 
D. 40-minute television program 
E. craving for Del Taco on a scale of 0 to 10
For the Del Taco experiment, what are the levels of the length factor? 
A. 30-second and 90-second commericals 
B. 40-minute television program 
C. 60 students 
D. 1, 3, or 5 commercials during the 40-minute television program 
E. craving for Del Taco on a scale of 0 to 10
In the Del Taco experiment, how many treatments are there?
answer: ? 

 
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