hour statistics lecture. The study included 121 students who averaged 32.2 minutes concentrating on their professor during the hour lecture. The standard deviation was 12.2 minutes. Round answers to 3 decimal places where possible. a. To compute the confidence interval use a ?v distribution. b. With 95% confidence the population mean minutes of concentration is between and minutes. c. If many groups of 121 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 mean minutes of concentration and about percent will not contain the true population mean minutes of concentration.
hour statistics lecture. The study included 121 students who averaged 32.2 minutes concentrating on their professor during the hour lecture. The standard deviation was 12.2 minutes. Round answers to 3 decimal places where possible. a. To compute the confidence interval use a ?v distribution. b. With 95% confidence the population mean minutes of concentration is between and minutes. c. If many groups of 121 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 mean minutes of concentration and about percent will not contain the true population mean minutes of concentration.
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Author:Amos Gilat
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![A researcher is interested in finding a 95% confidence interval for the mean
number minutes students are concentrating on their professor during a one
hour statistics lecture. The study included 121 students who averaged 32.2
minutes concentrating on their professor during the hour lecture. The
standard deviation was 12.2 minutes. Round answers to 3 decimal places
where possible.
a. To compute the confidence interval use a ? distribution.
b. With 95% confidence the population mean minutes of concentration is
between
and
minutes.
c. If many groups of 121 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
percent
will not contain the true population mean minutes of concentration.
population mean minutes of concentration and about
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Transcribed Image Text:A researcher is interested in finding a 95% confidence interval for the mean
number minutes students are concentrating on their professor during a one
hour statistics lecture. The study included 121 students who averaged 32.2
minutes concentrating on their professor during the hour lecture. The
standard deviation was 12.2 minutes. Round answers to 3 decimal places
where possible.
a. To compute the confidence interval use a ? distribution.
b. With 95% confidence the population mean minutes of concentration is
between
and
minutes.
c. If many groups of 121 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
percent
will not contain the true population mean minutes of concentration.
population mean minutes of concentration and about
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