For a sample of 20 individuals with a mean of $64,000 and a standard deviation of $14,327, what would the confident interval be for an ?= .05.
a.57,294.63 to 70,705.37
b.60,796.29 to 70,705.37
c.57,294.63 to 70,682.94
d.60,796.29, 70,682.93
a.57,294.63 to 70,705.37
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