10. The actual volume of milk in 1-L cartons of milk was checked by measuring a selection of 120 cartons. The chart show

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10 The Actual Volume Of Milk In 1 L Cartons Of Milk Was Checked By Measuring A Selection Of 120 Cartons The Chart Show 1 (68.23 KiB) Viewed 43 times

10. The actual volume of milk in 1-L cartons of milk was checked by measuring a selection of 120 cartons. The chart shows the results. Volume (L) Frequency 0.98 6 0.99 18 1.00 30 1.01 35 1.02 19 1.03 9 1.04 0 1.05 3 a) Calculate the mean and standard deviation, accurate to three decimal places. b) Did you use the population or sample formulas? Why? c) The company has decided that a sample that is within two standard deviations of the mean is acceptable. A random sample was taken and the volume was 0.98 L. Would this be an acceptable sample? d) On the following day, the mean volume of milk per carton was 1.012 L, with a standard deviation of 0.009 L. Compare the two days' test results.