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Four balls are drawn in succession without replacement from an urn containing 4 red balls, 3 blue balls and 3 yellow balls. Let Z be the random variable representing the number of blue balls.
Let us suppose that the body weights of 800 students have a normal
distribution with mean l = 66 kg and standard deviation r = 5 kg.
Find the number of students whose weight is:
a) between 65 and 75 kg;
b) over 72 kg
If dy/dx = y − x, y(0) = 1 2 . Use Modified Euler’s method with h = 0.1 to obtain an approximation to y(0.2).
The given differential equation (1-6y^2-3x^2y)
a) A woman who has won a prize is offered a lump sum of 100000 to invest now or 55000 to invest at the end of this year .If all investments are assumed to earn 7% per annum which should she choose if she wants to withdraw the money after
i) 4 years
2 years
Solution of differential equation p^ 2 +5p+6=0 is...
The probabilities that a bias die will fall as 1, 2, 3, 4, 5, or 6 are ½, 1/6, 1/12, 1/12, 1/12, and 1/12, respectively.
1. List all elements in A. A={xϵN:(3x2-x)<55}
A Population Has A Mean Of 73.5 And A Standard Deviation Of 2.5
A. Find the mean and standard deviation of x for samples of size 30
B. Find the probability that the mean of a sample of size 30 will be less than 72
An umbrella check girl returns 2 umbrellas at random to 2 customers who had previuosly checked in namely andrea and althea. If Andrea's umbrella was black and althea's umbrella was yellow. List the elements of the samplke space all possible orders in which the umbrellas can be returned and list all possible values of the random variable x the number of correct matches
