Search & Filtering
Consider the population consisting of 1, 2, 3, 5, 6, and 7. Suppose samples of size 4 are drawn from this population. Describe the sampling distribution of the sample means. Compute for the mean and the variance of the sampling distribution of the sample means. Be guided by the first illustration.
STEPSSOLUTION1. Compute the mean of the population.2. Compute the variance of the population.3. Determine the number of possible samples of size n = 44. List all possible samples and compute their corresponding means.5. Construct the sampling distribution of the sample means.6. Compute the mean of the sampling distribution of the sample mean.7. Compute the variance of the sampling distribution of the sample means.
Difficult Addition
Arjun is trying to add two numbers. Since he has learned addition recently, an addition which requires a carry is difficult for him. Your task is to print Easy if the addition does not involve a carry, Otherwise print Hard.
Input
The first line of input contains two space separated integers A and B.
Output
If the addition does not involve a carry,print Easy, otherwise print Hard.
Explanation
When calculating 229 + 390, we have a carry from the tens digit to the hundreds digit, so the answer is Hard.
Sample Input1
229 390
Sample Output1
Hard
Sample Input2
123456789 9876543218
Sample Output2
Easy
1. Molarity (M)
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#339914 on Dec 2023