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Express the confidence interval 35%<p<47.2% in the form of p^±E.
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 142 students who averaged 38.7 texts per day. The standard deviation was 16.6 texts. Round answers to 3 decimal places where possible. a. To compute the confidence interval use a ✓ distribution. b. With 98% confidence the population mean number of texts per day is between and texts. c. If many groups of 142 randomly selected members are studied, then a different confidence interval would be produced from each group. About percent of these confidence intervals will contain the true population number of texts per day and about percent will not contain the true population mean number of texts per day. Question Help: O Post to forum
Express the confidence interval 0.749±0.051 in open interval form ( i.e., (0.155,0.855)). Question Help: D Post to forum