Answer:
a. mean = 820; standard deviation = 57.74
b.0.75 or 75%
Step-by-step explanation:
Lower limit (L) = 720
Upper limit (U) =920
a.The mean of an uniform distribution is given by:
The standard deviation of an uniform distribution is given by:
b. The probaility that X is less 870 is:
Answer:
D: x = 1/2
Step-by-step explanation:
D is correct. The solution here is the solution of -6x + 3 = 0, which is x = 1/2.
When we draw with replacement we have independent events and the probability of the conjunction is the product of the individual probabilities.
P(Green first & Blue second) = P(Green first) P(Blue second) = P(Green) P(Blue)
P(Blue) = P(Green first & Blue second) / P(Green) = (2/25)/(1/5) = 2/5
So 2/5 of the marbles are blue, (2/5)(15)=6 marbles
Choice D
Answer:
none. roller skating sucks
Step-by-step explanation:
Answer:
The entire floor can contain approximately 4178 fans
Step-by-step explanation:
The first step is to calculate the area of the basketball floor.
we can do this by multiplying the length by the breadth as such 94 X 50 = 4700 square feet.
The second step is to calculate the area occupied by 8 of the fans. We can do this by multiplying 3 ft by 3ft = 9 square feet.
From this, it will be easier to estimate the area occupied by only one fan. This can be got by dividing 9 square feet by 8.
This is = 1.125 square feet.
To get the number of students it can occupy, we divide the total area of the court by the area occupied by one student.
4700/ 1.125 =4177.8 4178 fans