The average amount of time public health officers in municipality A and B spend in conducting seminars each day is believed to be the same. An experiment is done, data is collected, resulting in the table below. Both populations have a normal distribution. Is there a difference in the mean amount of time public health officers in municipality A and B spend in conducting seminars each day? Use 5% significance.   PHO Sample size Ave. number of hours Standard Deviation municipality A         9              2              8.7 municipality B        16             3.2              1.0

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