Qn 1. A study on the protopectin content of tomatoes during storage was carried
ID: 3064086 • Letter: Q
Question
Qn 1. A study on the protopectin content of tomatoes during storage was carried out. Four storage times were selected, and samples from four lots of tomatoes were analyzed. The protopectin content (expressed as hydrochloric acid soluble fraction mg/kg) is in the table below. Lot Storage time 0 days 7 days 14 days 21 days 1694 1000 650 415 1123 818 422 394 1106 407 420 356 1116 462 409 351 i. (10 points) Carry out an ANOVA test at a-0.05 to test whether there is a significant difference in protopectin content with different storage times. State all your hypotheses clearly, and complete the following ANOVA table. dof MS Treatment Within Subject Error Total ii. (6 points) Perform a Tukey's HSD test to ascertain which storage times resulted in significantly different protopectin content.Explanation / Answer
Anova: Two-Factor Without Replication SUMMARY Count Sum Average Variance 0 day 4 5039 1259.75 83858.91667 7 4 2687 671.75 81074.91667 14 4 1901 475.25 13604.91667 21 4 1516 379 944.6666667 1 4 3759 939.75 310613.5833 2 4 2757 689.25 121103.5833 3 4 2289 572.25 127380.25 4 4 2338 584.5 127607 ANOVA Source of Variation SS df MS F P-value F crit Rows 1870483.688 3 623494.5625 29.59164694 5.41791E-05 3.862548358 Columns 348820.6875 3 116273.5625 5.518454236 0.019911512 3.862548358 Error 189629.5625 9 21069.95139 Total 2408933.938 15