WGU STatistics Test Exam With Complete Solutions
WGU STatistics Test Exam With Complete Solutions In a standard 52-card deck, where each card is assigned a numeric value, the mean of the 52 cards is 7.0 with a standard deviation of 3.742. To test if a representative sample can be attained, the deck is shuffled and 13 cards are randomly drawn, one at a time. Each card is recorded and then returned randomly to the deck before the next card is drawn. This process of drawing 13 random cards is repeated a total of 20 times, and the mean and standard deviation of each round is computed. Which type of sampling is this an example of? Randomization Multiple comparison Matched pairs Bootstrap - Correct Answer Bootstrap A study is done to determine if the color of an apple affects the purchase rate by consumers at a grocery store. Purchase counts for three colors of apples are collected. Which technique should be used to determine if there is a difference in purchase rate by color? Rank-based Randomization t-test ANOVA - Correct Answer ANOVA A hospital network collects the amount of time it takes doctors to see patients. Which two techniques are appropriate to compare the mean times of two subsets within this set of doctors? Choose 2 answers
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