Applying the Concepts and Skills Lifetimes of Flashlight Batteries. Two different options are under consideration for comparing the lifetimes of four brands of ashlight battery, using 20 ashlights. a. One option is to randomly divide 20 ashlights into four groups of 5 ashlights each and then randomly assign each group to use a different brand of battery. Would this statistical design be a completely randomized design or a randomized block design? Explain your answer. b. Another option is to use 20 ashlights—ve different brands of 4 ashlights each—and randomly assign the 4 ashlights of each brand to use a different brand of battery.Would this statistical design be a completely randomizeddesign or a randomized block design? Explain your answer.
Applying the Concepts and Skills Lifetimes of Flashlight Batteries. Two different options are under consideration for comparing the lifetimes of four brands of ashlight battery, using 20 ashlights.
a. One option is to randomly divide 20 ashlights into four groups of 5 ashlights each and then randomly assign each group to use a different brand of battery. Would this statistical design be a completely randomized design or a randomized block design? Explain your answer.
b. Another option is to use 20 ashlights—ve different brands of 4 ashlights each—and randomly assign the 4 ashlights of each brand to use a different brand of battery.Would this statistical design be a completely randomized
design or a randomized block design? Explain your answer.
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