Pulse rates of women are normally distributed with a mean of 77.5 beats per minu

Question

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 a 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. A. The z scores are measured with units of "beats per minute". b. The z scores are measured with units of " minutes per beat". C. The z scores are measured with units of "beats". D. The z scores are measured without units of measurement.

Explanation / Answer

a)

u = 77.5 - 77.5/11.6

= 0

rho = 11.6 - 77.5/11.6

= - 5.68

b)

z-scores are measured without units of measurement

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