Question
receptionists is bell-shaped and has a mean of 50 and a standard deviation of 4.Using the empirical (68-95-99.7) rule, what is the approximate percentage of
receptionists is bell-shaped and has a mean of 50 and a standard deviation of 4.Using the empirical (68-95-99.7) rule, what is the approximate percentage of daily phone calls numbering between 38 and 62?
Answer =% . (Enter answer as a percent, but do not enter the percent symbol. Do not enter in decimal form. For example, enter 93.8 for 93.8%, not 0.939)
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Cambridge IGCSE And O Level Additional Mathematics
Authors: Val Hanrahan, Jeanette Powell
1st Edition
1510421645, 978-1510421646
