The contingency table below gives the counts of students by activities and gender. band sports debate total male 105 320 7 432 female 105 160 14 279 total 210 480 21 711 if a student is randomly selected, what is the probability that a student is female or plays sports?

599/711

Step-by-step explanation:

           BandSportsDebateTotal

Male     105320  7         432

Female105160         14         279

Total210480          21          711

P(female or plays sports)

We want the probability that they are female or play sports, but we cannot double count the female sports players, so we subtract them

 P(female) + P (sports) - (female and sports)

female/total + sports/total - female sports/ total

279/711 + 480/711 - 160/711

599/711

answer: given that the roller coaster can accommodate 1600 riders per hour, thus the roller coaster can accomodate 1600 / 60 = 26.67 riders per minute.

given that there are 345 people in the line, the number of minutes it will take for the 345 persons to get into the roller coaster is given by 345 / 26.67 = 12.94 minutes.

therefore, it will take you 12.94 minutes to get to the front of the line.

step-by-step explanation: