Download App

Statistics 1 Marks Each

PART 2 : RANDOM VARIABLE ANE DISCRETE PROBABILITY DISTRIBUTION · Gujarat Board (GSEB) STD 12 Commerce (GSEB - English Medium). 15 questions.

Questions

1 Marks Each

🎯

Test yourself on this topic

15 questions · timed · auto-graded

Question 11 Mark
The probability distribution of a random variable $X$ is as follows. Find $p(x<3).$
$x$ $1$ $2$ $3$ $4$ $5$
$p(x)$ $(1)/(10)$ $(1)/(5)$ $(1)/(2)$ $(1)/(10)$ $(1)/(10)$
Answer
$\frac{3}{10}$
View full question & answer→
Question 21 Mark
The mean and variance of a binomial variable are $8$ and $7$ respectively. Find the probability of success.
Answer
$\frac{1}{8}$
View full question & answer→
Question 41 Mark
The mean of a binomial distribution $b(5, p)$ is $4 .$ What can be said about its skewness ?
Answer
Negative skewness
View full question & answer→
Question 61 Mark
Write the probability function of binomial distribution $b\left(7, \frac{1}{4}\right)$.
Answer
$p(x)={ }^7 C_x\left(\frac{1}{4}\right)^x\left(\frac{3}{4}\right)^{7-x}, x=0.1 \ldots .7$
View full question & answer→
Question 71 Mark
Is the following function a probability distribution? $ \begin{aligned} &p(x)=k(x-2), x=1,3,5 \\ &k>0 \\ & \end{aligned} $
Answer
સ્વપ્રયત્ન
View full question & answer→
Generate Paper FreeAll PART 2 : RANDOM VARIABLE ANE DISCRETE PROBABILITY DISTRIBUTION topics
1 Marks Each - Statistics STD 12 Commerce Questions - Vidyadip