1. Mean =52+3+6+5+7=4.6
2. Variance =5−11((2−4.6)2+(3−4.6)2+(6−4.6)2+(5−4.6)2+(7−4.6)2)
=41(6.76+2.56+1.96+0.16+5.76)=4.3
3. Number of sample =2!(5−2)!5!=2020=10
4.
The mean of the sampling distribution of the sample means = 4.6
5. The variance of the sampling distribution of the sample means = 1.43
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