An experiment was conducted to compare the area length of the timerequired for t

Question

An experiment was conducted to compare the area length of the timerequired for two bank employees A and B to complete the paperworkfor new customers personal checking accounts. 35 customers wererandomly assigned to each employee and the lengths of service timewere recorded. The means and standard deviation are givenbelow.

    sample size   | mean   |standard dev
A   35                  5             1.5
B    35                 8    1.6
         
a) is there any significant difference between their efficiency at2% level
b) find 99% Confidence Interval

Explanation / Answer

B 2% is 7.9599 to 8.0401 = 0.0802 difference

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