quiz to see if their mean pulse  rate changed. A summary of the result is given below: Student             1             2                3              4           5          6         7            8 Pulse before:     98         87              74             75      85          96        85         70 Pulse after  :     101       86              72            74        83         99         85        65 test the hypothsese at(alpha =.05) level of signifcance

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