最新的WGU Applied Probability and Statistics (FZO1 C955) - Applied-Probability-and-Statistics免費考試真題
Binomial distribution parameters = ?
正確答案: D
說明：（僅 Fast2test 成員可見）
A sociologist is investigating the relationship between educational level, high school, bachelor's, master's, and doctorate, and annual income.
How should this study be classified?
How should this study be classified?
正確答案: B
說明：（僅 Fast2test 成員可見）
P(A) = 0.3, P(B) = 0.4, A and B independent. P(A and B) = ?
正確答案: B
說明：（僅 Fast2test 成員可見）
Type II error # is:
正確答案: D
說明：（僅 Fast2test 成員可見）
Probability sum for all outcomes = ?
正確答案: C
說明：（僅 Fast2test 成員可見）
Probability of drawing red card from deck = ?
正確答案: A
說明：（僅 Fast2test 成員可見）
In a city's public transportation system, the distribution of commuters by mode of transport is as follows: 40% use buses, 25% use trains, 20% use bicycles, 10% walk, and 5% use other means of transportation.
What is the probability that a randomly selected commuter uses either a bus or a train?
What is the probability that a randomly selected commuter uses either a bus or a train?
正確答案: C
說明：（僅 Fast2test 成員可見）
Poisson used for:
正確答案: B
說明：（僅 Fast2test 成員可見）
Correlation coefficient r = #0.5 #
正確答案: B
說明：（僅 Fast2test 成員可見）
Mean = 50, SD = 5, n = 25. Standard error = ?
正確答案: C
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A hospital analyzes the recovery rates of patients undergoing two different treatments for a specific condition.
Treatment X has an overall recovery rate of 80%, while Treatment Y has a recovery rate of 90%. However, when the data is divided by age groups, Treatment X has a higher recovery rate in each age group compared to Treatment Y.
Is Simpson's paradox present in this study?
Treatment X has an overall recovery rate of 80%, while Treatment Y has a recovery rate of 90%. However, when the data is divided by age groups, Treatment X has a higher recovery rate in each age group compared to Treatment Y.
Is Simpson's paradox present in this study?
正確答案: A
說明：（僅 Fast2test 成員可見）
A child's parents want to analyze the relationship between the daily high temperature and ice cream sales at their child's ice cream stand. They create the following scatterplot.
What is the estimated value of r, the correlation coefficient, between these variables?
What is the estimated value of r, the correlation coefficient, between these variables?
正確答案: B
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Correlation r = 0.8 # strong positive relationship #
正確答案: D
說明：（僅 Fast2test 成員可見）
Empirical probability is based on:
正確答案: A
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