Su kien - Các lớp học phân Gia Lớp học phần này Marker Tools Thoát khỏi hoạt động Resources OUTLINE Search NOTES Trắc nghiệm 6: Một lớp học có 20 học sinh thi ba môn toán, lý, hóa. Kết quả có 16 học sinh thi đỗ môn toán, 15 học sinh thi đỗ môn lý và 14 học sinh thi đỗ môn hóa. Có 14 học sinh thi đỗ cả môn toán và lý, 12 học sinh thi đỗ cả môn lý và hóa, 12 học sinh đỗ cả toán và hóa, 5 học sinh đỗ cả ba môn. Chọn ngẫu nhiên 1 học sinh, gọi A, là biến cố học sinh thi đỗ môn toán, A, là biến cố học sinh thi đỗ môn lý, Ag là biến cô học sinh thi đỗ môn hóa, xác suất để học sinh đó thi đỗ ít nhất 1 môn là

Scarlet bought three pairs of sunglasses and two shirts for $81 and paula bought one pair of sunglasses and five shirts for $105 what is the cost of one pair of sunglasses and one shirt?

In a sample of 2023 u.s. adults, 373 said franklin roosevelt was the best president since world war ii. two u.s. adults are selected at random from the population of all u.s. adults without replacement. assuming the sample is representative of all u.s. adults, complete parts (a) through (d). (a) find the probability that both adults say franklin roosevelt was the best president since world war ii. the probability that both adults say franklin roosevelt was the best president since world war ii is (round to three decimal places as needed.) (b) find the probability that neither adult says franklin roosevelt was the best president since world war ii. the probability that neither adult says franklin roosevelt was the best president since world war ii is (round to three decimal places as needed.) (c) find the probability that at least one of the two adults says franklin roosevelt was the best president since world war ii. the probability that at least one of the two adults says franklin roosevelt was the best president since world war ii is (round to three decimal places as needed.) (d) which of the events can be considered unusual? explain. select all that apply. the event in part left parenthesis a right parenthesis is unusual because its probability is less than or equal to 0.05. the event in part (b) is unusual because its probability is less than or equal to 0.05. none of these events are unusual. the event in part (c) is unusual because its probability is less than or equal to 0.05.

The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?