A researcher is interested in finding a 98% confidence interval for the mean number of times per day that college studen
Posted: Mon Jul 11, 2022 11:40 am
A researcher is interested in finding a 98% confidence intervalfor the mean number of times per day that college students text.The study included 138 students who averaged 29.6 texts per day.The standard deviation was 24.8 texts. Round answers to 3decimal places where possible. Please fill in the blanks.
a. To compute the confidence interval use a ___t or ___zdistribution.
b. With 98% confidence the population mean number of textsper day is between ____ and ____ texts.
c. If many groups of 138 randomly selected members arestudied, then a different confidence interval would be producedfrom each group. About ____ percent of these confidence intervalswill contain the true population number of texts per day and about____ percent will not contain the true population mean number oftexts per day.
a. To compute the confidence interval use a ___t or ___zdistribution.
b. With 98% confidence the population mean number of textsper day is between ____ and ____ texts.
c. If many groups of 138 randomly selected members arestudied, then a different confidence interval would be producedfrom each group. About ____ percent of these confidence intervalswill contain the true population number of texts per day and about____ percent will not contain the true population mean number oftexts per day.