Two dice are through simultaneously the probability if getting a double is ___________

(a)

\(\frac{5}{36}\)

(b)

\(\frac{1}{12}\)

(c)

\(\frac{1}{9}\)

(d)

\(\frac{1}{6}\)

A number x is chosen at random from -4, -3, -2, -1, 0, 1, 2, 3, 4 find the probability that |x| ≤ 4

(a)

0

(b)

1

(c)

\(\frac{1}{2}\)

(d)

\(\frac{1}{9}\)

If the smallest value and co-efficient of range a data are 25 and 0.5 respectively. Then the largest value is ___________

(a)

25

(b)

75

(c)

100

(d)

12.5

If the standard deviation of a variable x is 4 and if = \(\frac { 3x+5 }{ 4 } \) , then the standard deviation of y is ___________

(a)

4

(b)

3.5

(c)

3

(d)

2.5

In a competition containing two events A and B, the probability of winning the events A and B are \(\frac { 1 }{ 3 } \) and \(\frac { 1 }{ 4 } \) respectively and the probability if winning both events is ___________

(a)

\(\frac { 1 }{ 12 } \)

(b)

\(\frac { 5 }{ 12 } \)

(c)

\(\frac { 1 }{ 12 } \)

(d)

\(\frac { 7 }{ 12 } \)