The following data represent the scores received on the 2015 SAT Mathematics Test, by gender:
|
200 - 290
|
33,987
|
31,462
|
|
300 - 390
|
121,664
|
142,491
|
|
400 - 490
|
242,281
|
297,876
|
|
500 - 590
|
230,577
|
265,340
|
|
600 - 690
|
127,109
|
130,075
|
|
700 - 800
|
39,184
|
36,475
|
For each of the circumstances below, explain (don't just compute) how you would find these probabilities and what rule you applied to calculate them.
1. If a test taker is randomly selected, what is the probability that the test taker is male?
2. If a test taker is randomly selected, what is the probability that the test taker scored between 400 and 690?
3. If a test taker is randomly selected, what is the probability that the test taker is female or scored 700 -800?