Oh man. *pant* somebody *pant* there is this cereal killer on the loose! and he is chasing !
this is the cereal killer> the table shows the number of boys and girls who have signed up for swimming lessons.
outcome | boys | girls
frequency | 20 | 25
what is the experimental probability that the next person who signs up for swimming lessons will be a boy?
a. 4/9
b.1/2
c. 5/9
d.4/5
to stop his madness answer the question.
you for whoever can answer my question and stop the killer!

There are two major tests of readiness for college: the act and the sat. act scores are reported on a scale from 1 to 36. the distribution of act scores in recent years has been roughly normal with mean µ = 20.9 and standard deviation s = 4.8. sat scores are reported on a scale from 400 to 1600. sat scores have been roughly normal with mean µ = 1026 and standard deviation s = 209. reports on a student's act or sat usually give the percentile as well as the actual score. the percentile is just the cumulative proportion stated as a percent: the percent of all scores that were lower than this one. tanya scores 1260 on the sat. what is her percentile (± 1)?