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:
The best description is "It is much higher than the world average."
Explanation:
The government's actions did affect the ratio, but it's probably more accurate to say that the ratio is higher. There are more men than women, which makes the ratio pretty high. (A high ratio is one where there is a large difference between the two numbers.)
An establishment of the directory (i think)
Answer:
Answer to the following question is as follows;
Explanation:
The primary argument of a writer in an article is the assertion that regulates the entire article, that really is, it is the writer's opinion on a subject matter that will evaluate all of the knowledge described in the paper, in which the person who wrote this article will display evidence that demonstrates how his point of view is completely accurate and therefore should be treated seriously.
