Please verify answer for question 23 by steps. The following data refers to yiel
ID: 3325384 • Letter: P
Question
Please verify answer for question 23 by steps. The following data refers to yield of tomatoes kg lot) for four different levels of salinity; salinity level here refers to elec where the chosen levels were EC 1.6, 3.8, 6.0, and 10.2 nmhos/cm: trical conductivity (EC), 1.6: 59.5 53.3 56.863.1 58.7 3.8: 55.2 59.1 52.8 54.5 6.0: 51.748.8 53.9 49.0 10.2: 44.6 48.5 41.0 47.3 46.1 Use the F test at level = .05 to test for any differences in true average yield due to the differ- ent salinity levels. 23. Apply the modified Tukey's method to the data in Exercise 22 to identify significant differences among the 14, s.Explanation / Answer
Answer:
Based on the given data, yield of tomato (kg/plot) values at different levels of salinity are:
ANOVA test can be performed to test for any differences in true average yield due to different salinity levels:
Significance level = 0.05 (5%)
p-value corresponding to a F-value of 17.112 is 0.000059. The p-value is less than the significance level of 5% (0.05). Therefore, reject the Null Hypothesis.
Based on the evidence, not all means are equal.
Tukey test for pairwise comparison of group means:
Level of salinity (electrical conductivity EC) EC = 1.6 EC = 3.8 EC = 6.0 EC = 10.2 59.5 55.2 51.7 44.6 53.3 59.1 48.8 48.5 56.8 52.8 53.9 41.0 63.1 54.5 49.0 47.3 58.7 46.1