Show work plsSolutionMargin of Error Z a2 sd Sqrtn Where x

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Margin of Error = Z a/2 * (sd/ Sqrt(n))
Where,
x = Mean
sd = Standard Deviation
a = 1 - (Confidence Level/100)
Za/2 = Z-table value
Mean(x)=78.53
Standard deviation( sd )=3.25
Sample Size(n)=25
Margin of Error = Z a/2 * 3.25/ Sqrt ( 25)
= 2.58 * (0.65)
= 1.68, D. $1.72