Mathematics, 14.06.2021 14:00 Madeline6117
Câu 3. Một lô hàng có 439 sản phẩm loại I và 179 sản phẩm loại II. Lấy ngẫu nhiên ra 5 sản phẩm
có hoàn lại. Gọi X là số sản phẩm loại I lấy được.
a) Lập bảng phân phối xác suất của X;
b) Tìm kỳ vọng và phương sai của X.
Answers: 1
Mathematics, 21.06.2019 19:30, gonzalesalexiaouv1bg
The wheels of a bicycle have a diameter of 70cm. how many meters will the bicycle travel if each wheel makes 50 revolutions
Answers: 2
Mathematics, 21.06.2019 19:50, JS28boss
The probability that a student graduating from suburban state university has student loans to pay off after graduation is .60. if two students are randomly selected from this university, what is the probability that neither of them has student loans to pay off after graduation?
Answers: 2
Mathematics, 21.06.2019 21:10, sierravick123owr441
Given: lines a and b are parallel and line c is a transversal. prove: 2 is supplementary to 8 what is the missing reason in the proof? statement reason 1. a || b, is a transv 1. given 2. ∠6 ≅ ∠2 2. ? 3. m∠6 = m∠2 3. def. of congruent 4. ∠6 is supp. to ∠8 4. def. of linear pair 5. ∠2 is supp. to ∠8 5. congruent supplements theorem corresponding angles theorem alternate interior angles theorem vertical angles theorem alternate exterior angles theorem
Answers: 3
Câu 3. Một lô hàng có 439 sản phẩm loại I và 179 sản phẩm loại II. Lấy ngẫu nhiên ra 5 sản phẩm
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