A researcher is interested in finding a 98% confidence interval for the mean number of times per day that college students text. The study included 111 students who averaged 32.6 texts per day. The standard deviation was 13.9 texts. Round answers to 3 decimal places where possible.
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9 / sqrt(111) ≈ 13.9 / 10.535 ≈ 1.319 Show more…
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