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Z for 98 Percent CI st095 L8

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    So, the first thing you probably did was note that there was 1% here and 1%
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    here, so that the total area under the normal curve adds to 100%. So now, let's
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    bring up the Z table. So, we're looking for a proportion of 0.01, that's under
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    the curve to the left of the Z score. Our closest bet is right here, 0.0099. So
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    that's the closest value in the Z table to 0.01, or 1%. And that corresponds to
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    a Z squared of negative 2.33. So this Z squared value is going to be negative
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    2.33, and you should have written here positive 2.33. So, 98% of sample means
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    fall within positive 2.33 standard errors from the population mean.
Cím:
Z for 98 Percent CI st095 L8
Video Language:
English
Team:
Udacity
Projekt:
ST095- Statistics
Duration:
0:54
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