Statistics question
Context
In 2015 college students at a large state university completed a survey about their academic and personal life. Questions ranged from “How many credits are you registered for this semester?” to “Would you define yourself as a vegetarian?”
The researcher randomly selected 325 students from the university; 312 responded to the survey.
Prompt
The cell-phone datafile is available in the Data section below.
Once again, here is the research question for this lab.
Based on a recent study, roughly 80% of college students in the U.S. own a smartphone. Is the proportion of smartphone owners lower at this university?
Respond to each of the following in your initial post.
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State your hypotheses in symbolic form and in words. (The following should be clear in your answer: the population of interest and the meaning of the proportion p in terms of the variable Cell.)
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StatCrunch uses a normal model to estimate the P-value probability. Verify that normality conditions are met.
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Use StatCrunch to conduct the hypothesis test.
Copy and paste the results (the StatCrunch output window) into your initial post.
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Give your P-value and interpret its meaning as a conditional probability.
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State a conclusion that answers the research question. Use a significance level of 5%. (Your answer should include the P-value and reference the population and the variable Cell.)
SAMPLE ASSIGNMENT