Theo thống kê, ba xạ thủ A, B, C có tỷ lệ bắn trúng bia lần lượt là 70%, 75% và 60% cùng bắn vào một tấm bia (xác suất bắn trúng coi như bằng tỷ lệ bắn trúng). Gọi X là biến ngẫu nhiên chỉ số lần bắn trúng.

Bảng phân phối xác suất của X:
X 0 1 2 3
P p1 p2 p3 p4
Tìm số p2

When slick heating company switched to an activity based costing system, it realized that it was allocating a much lower percentage of factory overhead to a product line that the marketing department was trying to push. the product line may contain which type of products?

Afood worker has just rinsed a dish after cleaning it. what should he do next?

Which of the following statements about revision is most accurate? (a) you must compose first drafts quickly (sprint writing) and return later for editing. (b) careful writers always revise as they write. (c) revision is required for only long and complex business documents. (d) some business writers prefer to compose first drafts quickly and revise later; others prefer to revise as they go.