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Snow Based on meteorological data for
the past century, a local TV weather forecaster estimates that the
region’s average winter snowfall is 23″, with a margin of error of
{2 inches. Assuming he used a 95% confidence interval, how should
viewers interpret this news? Comment on each of these statements:
a) During 95 of the past 100 winters, the region got
between 21″ and 25″ of snow.
b) There’s a 95% chance the region will get between 21″
and 25″ of snow this winter.
c) There will be between 21″ and 25″ of snow on the
ground for 95% of the winter days.
d) Residents can be 95% sure that the area’s average
snowfall is between 21″ and 25″.
e) Residents can be 95% confident that the average
snowfall during the past century was between 21″ and 25″ per
winter.
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