The rule below shows how Mrs. Murphy's long-distance phone company computes her monthly bill. Which answer expresses that rule i
n the form of an equation? Multiply the number of minutes Mrs. Murphy spent on long-distance calls by $0.42, the long-distance rate. Then add $24, the flat monthly charge.
Since 68% of the sample ranges from the plus minus first standard deviation from the mean, then interval wherein it will occur will be between 53.5% to 60.5%. I got this answer through adding and subtracting one standard deviation (3.5) from the mean (which is 57).
