Question
Three mixtures: A, B, and C containing 15%, 45%, and X%
of water, respectively. If all these mixtures are mixed in the ratio of 3:2:1 to form a resultant mixture, and the resultant mixture contains 25% of water in it, then find the value of X.Solution
ATQ, Let the quantity of mixture A, B, and C mixed be 300 litres, 200 litres, and 100 litres, respectively. Quantity of water in mixture A, B, and C is 45 litres, 90 litres, and X litres, respectively. According to the question, (45 + 90 + X)/600 = 25/100 135 + X = 150 X = 15
The grouped data for the observation are as follows.
Class :Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 2-4Â Â Â Â Â Â Â Â 4-6Â Â Â Â Â Â Â Â Â 6-8<...
Which one is not non-probability sample method
For the recorded observation, the coefficient of variation is 0.2 and the variance is 16. The arithmetic mean is:
Which of the following is an example of using a sample to make inference about a population?
Which of the following options is correct when data is classified on the basis of attributes?
A physical instructor claims that the mean weight of students in school is greater than 82 kg with standard deviation 20. If a sample of size 81 studen...
The variation among the observations of each specific class is known as:
A B and C are three mutually exclusive and exhaustive events associated with a random experiment. If P(B) = (3/2) P(A) and P(C) = (1/2) P(B) then value...
Relevant for Exams:
