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WGU D772 Statistical Data Literacy OA Exam 2026/2027 – Complete Exam

HEAL100 Health Care — exam and revision material · Other

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Health Care exam material, 7 pages. Originally published on StudyMerit.

Pages
7
Academic year
2025/2026
Language
English

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Name: Score: 20 Multiple choice questions Term A game has an expected value of $7.09. How should this be interpreted? A player will gain an average of $7.09 per game over many games. A player will gain $7.09 only if they win the game. A player will lose an average of $7.09 per game over many games. A player will break even exactly every game. 1 of 20 Term What role does the researcher play in an experiment? Randomly assign participants to the control group Collect data without interfering in the natural process Manipulate variables and observe the effects Blind the participants to the experimental conditions 2 of 20 Term The director of campus food services at a university wants to study the food preferences of students on campus. They place phone calls to 500 random students that span the grade levels. What is the sample in this study? The 500 students who answered the phone The director of campus food services Students called by the director All students attending the university 3 of 20

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Term What is one situation that shows a sampling frame error? A set of 100 randomly collected bees from a hive To measure the effect of light on attention span, researchers recruit participants and randomly assign them to two rooms, one with artificial light and the other with natural light. The sample provides reliable data that can be generalized to the larger population with confidence. To obtain information on preferences on movies being shown at a small theater, the owner asked for input from all customers that visited the theater on Monday or Tuesday of a given week. 4 of 20 Term A retail store owner analyzed sales data to determine that soccer ball sales and t-shirt sales increase and decrease together. The store owner knows that people who play soccer wear t- shirts, so they conclude that increased t-shirt sales are caused when people buy more soccer balls. Is this a valid conclusion? The specific maze color B because the expected value is higher than that of A. A retailer hands out hundreds of customer satisfaction surveys on pre-paid postcards, and by the deadline 26 people had mailed the survey in. What is illustrated in this scenario? No, because a confounding variable is a possible cause. 5 of 20

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Term What is one example of an experiment? To measure the effect of light on attention span, researchers recruit participants and randomly assign them to two rooms, one with artificial light and the other with natural light. The sample provides reliable data that can be generalized to the larger population with confidence. In a study on a new plant fertilizer, those not receiving the fertilizer To obtain information on preferences on movies being shown at a small theater, the owner asked for input from all customers that visited the theater on Monday or Tuesday of a given week. 6 of 20 Term Which value could represent the probability of an event? -0.2 1.5 0.01 200% 7 of 20 Term A random experiment has the sample space {F, H, J, K, L, M, Q, S, X, Y}. Event A is {H, K, Q, S, Y}. Event B is {F, J, K, M, S, X, Y}. Which outcomes correspond to the event "not A"? {H, K, Q, S, Y} {F, J, L, M, X} {F, H, J, K, L, M, Q, S, X, Y} {h, k, l, m, x, y} 8 of 20

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