In order to investigate whether sleep deprived people are perceived as less heal

Question

In order to investigate whether sleep deprived people are perceived as less healthy and less attractive, a group of participants were photographed after a normal night's sleep and after a night of sleep deprivation. The photographs were presented in a randomized order and rated by untrained observers. What type of study is described? a. Experiment b. Observational At a college party there are 25 men and 30 women. The party planners want to ask opinions about how to improve the next party. They choose at random 3 of the men and separately 4 random women to interview. This is an example of what type of sampling? a. Random sampling b. Systematic sampling C. Cluster sampling d. Stratified sampling e. Convenience sampling The "Group of 7" is a meeting of finance ministers and central bank governments of seven of the largest advanced economies. The total population for the group of seven countries (G7) is about 750.25 million. The graph below is the pie chart for the population percentages among the group of seven countries. Calculate Italy's population?

Explanation / Answer

question number 1 answer is

option A.experiment

question number 2 answer is

option D.startified sampling

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