Pulse rates of women are normally distributed with a mean of 77.5 beats per minute and a standard deviation of 11.6 beats per minute. answer the following questions. what are the values of the mean and standard deviation after converting all pulse rates of women to z scores using z = (x - mu )/sigma ? mu = sigma = the original pulse rates are measure with units of "beats per minute". what are the units of the corresponding z scores? choose the correct choice below. the z scores are measured with units of "beats per minute". the z scores are measured with units of "minutes per beat". the z scores are measured with units of "beats." the z scores are numbers without units of measurement.