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Evaluation: Chapter Eight Cumulative | MathLynx Online Mathematics 4/ 19/2021 Your Account Log Out Your Cart For MathLynx HOME LIBRARY STUDENTS INSTRUCTORS ABOUT US CONTACT Home >> Collaborative Statistics > Confidence Intervals > Evaluation Tools Evaluation: Chapter Eight Cumulative Problem 1 Expand All The mean age for King's College students for a recent Fall term was 32 . Suppose that 17 Winter students were randomly selected. The mean age for the sample was 34.2 . The sample standard deviation was calculated to be 11 . We are interested in the true mean age for Winter King's College students. a. (.10) x = b. (.10) s = c. (.20) The standard error for x = d. (.20) The t value for a 95% confidence interval is e. (.20) Construct a 95% confidence interval for the sample mean. Fill in the blanks to clarify the following diagram. LL (lower limit) = UL (upper limit) = LL UL f. (.20) Is the mean age for the Fall term within our 95% confidence interval for the mean age for the Winter term? (pick one) v Problem 2 Suppose that several insurance companies conduct a survey. They randomly surveyed 450 drivers and found that 360 claimed to always buckle up. We are interested in the population proportion of drivers who claim to always buckle up. www.mathlynx.com/online/collab_stat_confidence_eval_cum?mode=eval&course_id=1024/19/2021 Evaluation: Chapter Eight Cumulative | MathLynx Online Mathematics a. (.20) n = b. (.20) p' = c. (.20) The standard deviation for p = d. (.20) The z value for a 95% confidence interval is e. (.20) Construct a 95% confidence interval for the population proportion that claim to always buckle Fill in the blanks to clarify the following diagram. LL (lower limit) Expand All UL (upper limit) = LL UL SUBMIT Evaluation Tools up Hypothesis Testing . Printer-friendly version