Có ba hộp đựng các viên bi chỉ khác nhauvề màu sắc. Hộp I có 2 viên bi đỏ và 1 viên bi xanh, Hộp II có 3 viên bi đỏ và 1 viên bi xanh, Hộp III có 2 viên bi đỏ và 2 viên bi xanh. Lấyngẫu nhiên một hộp và từ đó lấy ngẫu nhiên một viên. Tính xác suất để lấy đượcviên bi đỏ

Determine the number of outcomes in the event. decide whether the event is a simple event or not. upper a computer is used to select randomly a number between 1 and 9 comma inclusive. event upper b is selecting a number greater than 4. event upper b has nothing outcome(s). is the event a simple event? (yes or no) because event upper b has (fewer than, exactly, more than) one outcome.

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

Needmax recorded the heights of 500 male humans. he found that the heights were normally distributed around a mean of 177 centimeters. which statements about max’s data must be true? a) the median of max’s data is 250 b) more than half of the data points max recorded were 177 centimeters. c) a data point chosen at random is as likely to be above the mean as it is to be below the mean. d) every height within three standard deviations of the mean is equally likely to be chosen if a data point is selected at random.