What are the values of the mean and standard deviation after converting?

Example:Pulse rates of women are normally distributed with a mean of 77.5beats per minute and a standard deviation of 11.6 beats per minute. a) What are the values of the mean and standard deviation afterconverting all pulse rates of women to z-scores usingz = (x-μ) / σ?µ = 0; σ = 1b) The original pulse rates are measured with units of "beats perminute." What are the units of the corresponding z-scores? The z-scores are numbers without units of measurement.