the two - way table shows the estimated number of students who will enroll in three area high schools next…

the two - way table shows the estimated number of students who will enroll in three area high schools next year. in decimal form, to the nearest tenth, what is the probability that a randomly selected riverside high school student is in twelfth grade?\n| | tenth grade | eleventh grade | twelfth grade | total |\n|--|--|--|--|--|\n| mt. woodson high school | 110 | 120 | 80 | 310 |\n| valley high school | 180 | 150 | 120 | 450 |\n| riverside high school | 160 | 140 | 200 | 500 |\n| total | 450 | 410 | 400 | 1260 |\n0.2\n0.3\n0.4\n0.5

the two - way table shows the estimated number of students who will enroll in three area high schools next year. in decimal form, to the nearest tenth, what is the probability that a randomly selected riverside high school student is in twelfth grade?\n| | tenth grade | eleventh grade | twelfth grade | total |\n|--|--|--|--|--|\n| mt. woodson high school | 110 | 120 | 80 | 310 |\n| valley high school | 180 | 150 | 120 | 450 |\n| riverside high school | 160 | 140 | 200 | 500 |\n| total | 450 | 410 | 400 | 1260 |\n0.2\n0.3\n0.4\n0.5

Answer

Explanation:

Step1: Identify relevant values

The number of twelfth - grade students at Riverside High School is 200, and the total number of students at Riverside High School is 500.

Step2: Calculate the probability

The probability $P$ that a randomly selected Riverside High School student is in twelfth grade is given by the formula $P=\frac{\text{Number of twelfth - grade students at Riverside}}{\text{Total number of students at Riverside}}$. So $P = \frac{200}{500}=0.4$.

Answer:

0.4