Let salary = x. Expenditure = 30% of x + 25% of x = 0.30x + 0.25x = 0.55x. Savings = x - Expenditure = x - 0.55x = 0.45x. Given savings = ₹18,000. 0.45x = 18000 → x = 18000 / 0.45 = ₹40,000. Correct answer: A) ₹40,000
At a round table, n persons are seated on n chairs. The probability that two friends from same college are sitting next to each other, is:
The grouped data for the observation are as follows.
Class : 2-4 4-6 6-8...
A random sample of size 225 is drawn from the population of mean μ and standard deviation σ. The sample mean follows the distribution with mean 100 a...
For making frequency distribution, the number of classes used depends upon:
For the variables X and Y, we collect 4 observations with ∑ X = 10,∑ Y = 14,∑ X2 = 30,∑ Y2 = 54,∑ XY = 31 The regressio...
For the production data
Year: 1 2 3 ...
Completely randomized design is based on the principles of _________ and randomization only.
The mode of the given data set is 12. The sum of the frequency on both sides of mode are 16. The skewness:
