22+82-11x9+17=? (freepointsdontreport)

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics

If rt is greater than ba, which statement must be true ?