each person and a simple random sample of 2000 received a survey and 317 people returned to their survey. How could non-response cause the results of it the survey to be biased

The table shows the age and finish time of ten runners in a half marathon. identify the outlier in this data set. drag into the table the ordered pair of the outlier and a reason why that point is an outlier.

20 solve 2(4 x + 3) < 5 x + 21. a) { x | x < 9} b) { x | x > -5} c) { x | x > -9} d) { x | x < 5}

Abox holds 500 paperclips. after a week on the teacher's desk 239 paperclips remained. how many paperclips were used?