Researchers doing a study comparing time spent on social media and time spent on studying randomly sampled 200 students at a major university. They found that the students in the sample spent an average of 2.3 hours per day on social media and an average of 1.8 hours per day on studying. The value 2.3 hours represents: A. the average number of hours students in the sample spent on social media. B. none of the answer options. C. the average number of hours students at a typical university spent on social media. D. the average number of hours students at the university spend on social media.
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The average time these students spent on social media was found to be 2.3 hours per day. Show more…
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Researchers doing a study comparing time spent on social media and time spent on studying randomly sampled 200 students at a major university. They found that students in the sample spent an average of 2.3 hours per day on social media and an average of 1.8 hours per day on studying. If all the students at the university in fact spent 2.2 hours per day on studying, with a standard deviation of 2 hours, and we find the probability of observing a sample mean of 1.8 hours studying has an extremely low probability, we say that observed time is: a. statistically unlikely. b. statistically significant. c. statistically wrong. d. statistically rare.
Qudsiya A.
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