The following frequency distribution shows the number ofcustomers who had an oil change at a particular Jiffy Lubefranchise for the past 40 days.
Number of customers | Frequency (days) | Relative Frequency | Cumulative Relative Frequency |
25 to 34 | 3 | | |
35 to 44 | 12 | | |
45 to 54 | 11 | | |
55 to 64 | 7 | | |
65 to 74 | 5 | | |
75 to 84 | 2 | | |
Use this data to construct a relative frequencyand cumulative relative frequency distribution.Report all of your answers in the table above to 3decimal places, using conventional roundingrules.
What percent of the days are there less than 45customers who had an oil change at this Jiffy Lube?Report your final answer to 2 decimal places, usingconventional rounding rules.
ANSWER: %
What proportion of the days were there 65 – 74customers at this Jiffy Lube for an oil change? Reportyour final answer to 4 decimal places, using conventional roundingrules.
ANSWER:
What percent of the days were there at least 55customers at this Jiffy Lube for an oil change? Reportyour final answer to 2 decimal places, using conventional roundingrules.
ANSWER: %
What is the approximate mean number of customers at this JiffyLube for an oil change? Report your final answer to 2decimal places, using conventional roundingrules.
ANSWER:
What is the approximate standard deviation of the number ofcustomers at this Jiffy Lube for an oil change? Reportyour final answer to 2 decimal places, using conventional roundingrules.
ANSWER:
What is the midpoint of the class interval with the largestfrequency? Report your final answer to 2 decimalplaces, using conventional rounding rules.
ANSWER:
