You collect a sample of 20 monthly employee salaries from Branch A and 20 monthly employee salaries from Branch B. If If x ?1 =5100.8 , x ?2= 3837.7, s1 = 945.199316 and s2 = 912.399099, what is the value of the pooled variance?
a. 928.94
b. 293.76
c. 862936.93
d. none of the above
c. 862936.93
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