A university official wishes to determine whether the format of instruction is related to the students’ opinion of the quality of instruction received.  A sample of students’ evaluations of three formats of instruction are shown here.      Format of Instruction  Rating Onground Hybrid Online Excellent 100 120 130 Average 150 260 180 Poor 120 50 140   What is the probability of a randomly selected person reported an average rating OR reported about onground instruction?

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A: Given that Opinion Female Male Almost no chance 138 106 Some chance but probably not 162…

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Q: Female Male Opinion Almost no chance 106 85 Some chance but probably not 138 168 A 50-50 chance 460…

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Q: How many individuals are described in this table? How many females were among the respondents? The…

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Q: The National Longitudinal Study of Adolescent Health interviewed several thousand teens (grades 7 to…

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.