Explanation:(a) Was this an observational study or an experiment? Explain your reasoning. Experiment, because certain variables were controlled (he sets the screen brightness to low and then starts a movie) to determine if iPhones last longer if the screen brightness is set to low, and it proves the cause and effect relationship.
(b) What is the explanatory variable and the response variable? Response Variable- To determine if iPhones last longer if the screen brightness is set to low Explanatory variable- he sets the screen brightness of 10 of the iPhones to high and starts a movie, then the other 10 to low and starts a movie.
(c) Was a random sample used to collect the data? Yes- “he selects a random sample of 20 brand new iPhones”
Answer:
d is the answer to your question
Answer:
either B or C.. but I'm really strong on B sorry if im wrong this is just my opinion
Explanation:
I think the answer would be B because if you co-sign and that person don't pay their part.. it falls on you because toy are the second party and the co-signer
but I also think it would be C a little too because if that person not paying they part it could put a dent in yours credit score because y'all co-signed together
Answer: Southeast Asian City Model
Explanation: should help
