List - I | List -II |
(A) t-distribution | (I)sample size\(\geq30\) |
(B) Sample mean | (II)\(X\) |
(C) Population mean | (III)degree of freedom |
(D)Z-distribution | (IV)\(\mu\) |
List - I | List - II |
(A) t-distribution | (I) sample size \(\geq30\) |
(B) Sample mean | (II) \(X\) |
(C) Population mean | (III) degree of freedom |
(D) Z-distribution | (IV) \(\mu\) |
Let the Mean and Variance of five observations $ x_i $, $ i = 1, 2, 3, 4, 5 $ be 5 and 10 respectively. If three observations are $ x_1 = 1, x_2 = 3, x_3 = a $ and $ x_4 = 7, x_5 = b $ with $ a>b $, then the Variance of the observations $ n + x_n $ for $ n = 1, 2, 3, 4, 5 $ is
Find the mean of the following distribution:
\[\begin{array}{|c|c|c|c|c|c|c|c|} \hline \textbf{Class-interval} & 11-13 & 13-15 & 15-17 & 17-19 & 19-21 & 21-23 & 23-25 \\ \hline \text{Frequency} & \text{7} & \text{6} & \text{9} & \text{13} & \text{20} & \text{5} & \text{4} \\ \hline \end{array}\]
A shop sells a book for 240 rupees after giving a 20 % discount on the marked price. What is the marked price of the book?