A distribution of measurements is relatively mound-shaped with mean 60 and standard deviation 5.
a) What approximate proportion of the measurements will fall between 55 and 65? (Enter your answer to two decimal places.)
b) What approximate proportion of the measurements will fall between 50 and 70? (Enter your answer to two decimal places.)
c) What approximate proportion of the measurements will fall between 50 and 65? (Enter your answer to three decimal places.)
d) What approximate proportion of the measurements will be greater than 65? (Enter your answer to two decimal places.)