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1. ### Help! with statistics question?

n=9 p=197/(197+163) k=5 P(X=k) = C(n,k) p^k (1-p)^(n-k)

1 Answers · Science & Mathematics · 04/04/2017

2. ### help me with this question?

...kx+7k 2x^2+5x-kx-7k-3=0 2x^2 +x(5-k) -7k-3 = 0 ax^2+bx+c = 0 a=2 b= 5-k c = -7k-3 3 and m are the roots sum of the roots = -b/a 3+m...

2 Answers · Science & Mathematics · 20/03/2017

3. ### How to do this?? How to show that the equation 16x^2+4y^2-64x-40y+100=0 represents ellipse? Find centre,foci,vertices?

... major axis Vertices = (h, k±a) = (2,1) and (2,9) Foci = (h, k±c) = (2, 5−2√3) and (2, 5+2√3)

2 Answers · Science & Mathematics · 21/02/2017

4. ### Probability in terms of k?

Since the events C and D are independent P(C and D) = P(C)*P(D) a) P(C and D) = 2k * 3k^2 = 6k^3 b) since P(C and D) = 6k^3 6k^3 = 0.162 k^3 = 0.162/6 = 0.027 k = cube root of 0.027 = 0.3 c...

2 Answers · Science & Mathematics · 16/02/2017

5. ### Prove that any positive integer has the form (2^k)n, where k is a nonnegative integer and n is an odd integer?

... largest +ve number such that 2^k divides c) then 2^k | c so c = 2^k * n where n has to be odd (If n were even then...

1 Answers · Science & Mathematics · 24/01/2017

6. ### Probability question - Satistics?

... (matches). Use the binomial probability formula: P(X = k) = C(n,k) * p^k * q^(n-k) n : number of trials (20) k : number...

1 Answers · Science & Mathematics · 14/12/2016

7. ### Data Management Question?

...a(k-1) balls. a) a(4) = a(3) + 4*5/2 = 20, a(5) = 35, a(6) = 56 b) a(k) = C(k+3,3) b) may be obtained from the recurrence a(k) = a(k-1) + k+ (k-1...

1 Answers · Science & Mathematics · 12/12/2016

a. d=kt The input is t and the output is d. b. 180=4.5k; k=40 c. d=40t d. 320=40t; t=8 hours

1 Answers · Science & Mathematics · 26/11/2016

Use the binomial probability formula: P(X=k) = C(n,k) * p^k * q^(n-k) n : number of trials (7) k : number...

1 Answers · Science & Mathematics · 05/12/2016

10. ### How do I solve this probability question?

Use the binomial probability formula: P(X=k) = C(n,k) * p^k * q^(n-k) n : number of trials (7) k : number...

2 Answers · Science & Mathematics · 05/12/2016