Mathematics, 03.07.2019 23:20 annabelle2516
Ameteorologist is studying the speed at which thunderstorms travel. a sample of 10 storms are observed. the mean of the sample was 12.2 mph and the standard deviation of the sample was 2.4. what is the 95% confidence interval for the true mean speed of thunderstorms?
Answers: 1
is sample mean, z* is z score at 95% confidence interval, s is standard deviation of sample and n is sample size.
![CI=[12.2-1.488, 12.2+1.488]](/tpl/images/0048/0979/289c0.png)
![CI=[10.712, 13.688]](/tpl/images/0048/0979/d0e88.png)
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Ameteorologist is studying the speed at which thunderstorms travel. a sample of 10 storms are observ...
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