Answer the following question in clean and easy format.

The following statements are the main sources of experimental error, except O a. Inherent variability which exists in the experimental units. b. Lack of uniformity in the physical conduct of the experiment. c. Treatments are homogeneous. How many cases should we consider if we are testing the hypothesis for the means? * O a. 4 O b.3 O c. 5 O d. NoneIn the completely randomized design, experimental units are relatively a. Homogeneous b. Heterogeneous c. Independent O d. Dependent A statistical method by which related known values are used to estimate an unknown price or value. * a. Testing b. Interpolation c. EvaluationIn an experiment using a latin square design. there are :3 column classifications. How many rowr classifications should be present in the experiment? * 0 {1. no rows Factor that may have an effect on the response variable but of not an interest to the researcher is called . * O a. Experimental Factor 0 b. Nuisance Factor 0 c. Randomized Factor 0 d. Treatment Factor Refers to the success of estimating the true value of a quantity. * a. Accuracy b. Precision O c. Variation O d. Error A balanced two-way classification design. * a. Complete Block Design b. Randomized Complete Block Design c. Latin Square DesignThe test statistics that we use when the population standard deviation is given in the problem. * The direction of blocking in REED should be to the direction of the gradient of the experimental units. * O a. Parallel O b. Oblique O c. Perpendicular