PLEASE ANSWER ALL 4 QUESTIONS
The owner of a bar wants to know whether their customers preferJohnnie Walker Whiskey or Seagram's Whiskey. The bar owner isundecided over which of two possible experiments she should use. InExperiment 1, each customer rates only one of the two drinks. InExperiment 2, each customer evaluates both types of whiskey.
Experiment 1
Flip a coin for each customer to choose which type of drink (s)hewill taste. Then each person rates the drink from 1 to 10.
Experiment 2
Flip a coin for each customer to choose which types (s)he willtaste first. After trying both types of drinks, ask which of thetwo varieties that (s)he prefers.
Which of the two given designs should the bar owner choose?Please explain your answer.
(2 points) Please indicate which type of sampling design is mostappropriate for each of the following studies. The choices are SRS,stratified random sampling, and matched pair design.
Does air pollution induce DNA mutations in mice? 20 male mice werehoused in a polluted industrial area downwind from a steel mill. Anaddition 20 male mice were housed in an unpolluted rural location30 kilometers away.
Does smoking affect class performance? 300 14 to 22 year oldsmokers and 300 14 to 22 year old nonsmokers were contacted andasked about their gpa's.
A researcher wants to know the effect of climate change on thepercent yield of the corn harvest. They collected the data for thesame 50 plots in both 2016 and 2017 for their study.
