Question
Tap A is 50% more efficient than tap B. Both the taps
together can fill the tank in (48/5) hours. Find the time taken by tap C, which is 60% more efficient than tap B, to fill the tank alone.Solution
Let, time taken by tap B to fill the tank be x hours,
So, time taken by tap A to fill the tank = x/1.5 hours According to question,
1/x + 1/(x/1.5) = 1/(48/5)
1/x + 1.5/x = 5/48
x = (48 × 2.5)/5 = 120/5 = 24 So, time taken by tap C to fill the tank = 24/1.6 = 15 hours
The null hypothesis in ANOVA one-way classification, the study of the variances due to k different sources, is:
If r and R denote correlation and multiple correlation coefficient for the data set for X1, X2 and X3 . Which option is correct?
The mean and median of the distribution are 10 and 11 respectively, then the mode equals to
Statistics is not applicable to ________ observation.
If the population kurtosis of the observations 16,12,6,2,4,10 is 1.7414, then population kurtosis of the 8,6,3,1,2,5 is
For the study purpose, the mean of the observations is 148 gm and standard deviation is 17.4 gm. Approximately, the coefficient of variation equals to:
In a two-way ANOVA table
the value of x, FA, FB are:
The fair dice is rolled 15 times and face value are noted
Face Value: 1 2 3...
The prices (in ₹) of different yarns (per kg) in two consecutive years are as follows.
If the occurrence of events follows Poisson Process with mean rate λ, then inter-occurrence time of events will follow:
Relevant for Exams:
