Question

. The heart rates for puppies are normally distributed, with a mean heart rate of 180 beats per minute with a standard deviation of 6 beats per minute. 10% of all puppies will have a heart rate greater than what value?

Answer 1

Find the z-score for 90% of the area under the distibution curve. Then find the required value (X) from the following equation:
\[Z=\frac{X-\mu}{\sigma}\]