5. The LMC math department conducted a survey to investigate whether at least 25% of students that regularly go to the Mathlab require assistance with Statcrunch software. The researcher randomly selected 97 students to participate in the study and 26 students from the sample admitted regularly seeking help from the Mathlab. a. Verify that conditions are met for the use of the normal model. (4 points) b. Calculate the standard error. (4 points) c. Estimate the true proportion of students who needed assistance with Statcrunch and go to the Mathlab using a 95% level confidence. Show all your work and write your conclusion in complete sentences. (4 points)
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Verify that conditions are met for the use of the normal model: We need to check if the sample size is large enough and if the success-failure condition is met. The sample size is 97, which is greater than 30, so it is large enough. The success-failure condition Show more…
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