Researchers studying the sticky droplets found on spider webs will measure the widths of a random sample of droplets. From the sample, the researchers will construct a 95 percent confidence interval to estimate the mean width of all such droplets. Which of the following statements about a 95 percent confidence interval for the mean width is correct? The interval will be narrower if the researchers increase the level of confidence to 99 percent. A The interval will be narrower if the researchers increase the sample size of droplets. B The interval will be wider if the researchers decrease the level of confidence to 90 percent. C The interval will be wider if the researchers increase the sample size of droplets. D The width of the interval will not be affected if the researchers increase or decrease the number of droplets in the sample. E
Researchers studying the sticky droplets found on spider webs will measure the widths of a random sample of droplets. From the sample, the researchers will construct a 95 percent confidence
-
The interval will be narrower if the researchers increase the level of confidence to 99 percent.
A -
The interval will be narrower if the researchers increase the
sample size of droplets.B -
The interval will be wider if the researchers decrease the level of confidence to 90 percent.
C -
The interval will be wider if the researchers increase the sample size of droplets.
D -
The width of the interval will not be affected if the researchers increase or decrease the number of droplets in the sample.
E
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