what is the domain of the function. PLS HELP WILL MARK BRAINLIEST AND ACTUALLY GIVE THE RIGHT ANSWER PLS

How to simply and write the answer n a whole number

According to a study conducted in 2015, 18% of shoppers said that they prefer to buy generic instead of name-brand products. suppose that in a recent sample of 1500 shoppers, 315 stated that they prefer to buy generic instead of name-brand products. at a 5% significance level, can you conclude that the proportion of all shoppers who currently prefer to buy generic instead of name-brand products is higher than .18? use both the p-value and the critical-value approaches.

The random variable x is defined as the number marking the sector in which the arrow lands when the spinner in the diagram is spun once.