Suppose the tree diagram below represents all the students in a high school
and that one of these students were chosen at random. Which of the
following represents a conditional probability? PIEL) -
P(EO
PIF)
A. The probability that the student is right-handed.
B. The probability that the student is left-handed given that they are a
boy
O C. The probability that the student is a girl and left-handed.
D. The probability that the student is not a boy.

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables