STA 215 intro to Statistical Reasoning. MW, Spring 17.25153 Quiz: Quiz 2 (Chapte

Question

STA 215 intro to Statistical Reasoning. MW, Spring 17.25153 Quiz: Quiz 2 (Chapters 6 11) Time Remaining: 01.1530 SubmtQ his Question: 1 pt 1 of 37 (0 complete) This Quiz: 37 pts post Twenty dogs and twenty cats were subjects in an experiment to test the efectiveness ot a new fea control chemical Ten of dogs were randomly assigned to an experimental group that wore a collar containing the chemical, while the others wore a smlar collar without the chemical The same was done with the cats Aher 30 days weerinarians were asked to inspect the animals korseas andevidenceofSeabtes What type of experments "s? randomized block, blocked by type of collar O B. completely randomized with one tactor: the species of animal O C, randomized block, blocked by species O D. completely randomized with one tactor the type collar 1043

Explanation / Answer

first one answer is

option c

Randomized block ,blocked by species

2 answer

a)

321556

b)answer A

3 )answer

281 milli grams

4)answer

D) a lurking variable.

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