Mathematics, 24.04.2020 21:53 jennypenny123
Last Wednesday, a random sample of 24 students were surveyed to find how long it takes to walk from the Fretwell Building to the college of education building. The survey team found a sample mean of 12.3 minutes with a standard deviation of 3.2 minutes. assuming walking time from Fretwell to College of education are normally distribution, which of the following is the correct 95% confidence interval for the population mean of walking times.
A) 12.3LaTeX: \pmLaTeX:±LaTeX:±(1.645)(LaTeX: \frac{3.2}{\sqrt{24}}LaTeX:3.224√La TeX:3.224)
B) 12.3LaTeX: \pmLaTeX:±LaTeX:±(1.90)(LaTeX: \frac{3.2}{\sqrt{24}}LaTeX:3.224√La TeX:3.224)
C) 12.3LaTeX: \pmLaTeX:±LaTeX:±(1.28)(LaTeX: \frac{3.2}{\sqrt{24}}LaTeX:3.224√La TeX:3.224)
D) 12.3LaTeX: \pmLaTeX:±LaTeX:±(2.575)(LaTeX: \frac{3.2}{\sqrt{24}}LaTeX:3.224√La TeX:3.224)
E) 12.3LaTeX: \pmLaTeX:±LaTeX:±(1.96)(LaTeX: \frac{3.2}{\sqrt{24}}LaTeX:3.224√La TeX:3.224) A E B C
Answers: 2
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