For a group of 100 students, the mean and standard deviation of scores were found to be 30 and 5 respectively. Later on it was discovered that the scor...
The six decile (D6 ) of 5, 3, 2, 6, 8, 4 is:
If Z1, Z2,…Zn are n independent standard normal variates, then Σni=1 Z2i will follow:
Two data set of size 9 and 6 have standard deviation 3 and 4 respectively and arithmetic means 3 and 3 respectively. The standard deviation of combined...
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...
Which one is not non-probability sample method
For the data set
X: 1 2 3 4 ...
Which of the following is a sources of primary data?
The incomes of the employees in a state is assumed to be normally distributed with mean ₹15,000 and variance ₹900. The median of the distribution o...
For completely randomized design for k treatments and n observations, yif = response from the jth unit receiving ith treatment, �...
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