In a study of robbers, a researcher finds a sample mean number of 4.5 robberies. Using inferential statistics, she finds a 95% confidence interval for the mean with a lower limit of 3.2 and an upper limit of 6.7. With a 95% confidence interval, we could say:
a. She can be 95% confident that the true mean number of robberies is below 3.2.
b. She can be 95% confident that the true mean number of robberies falls between 3.2 and 6.7.
c. She can be 95% confident that the true mean number of robberies is above 6.7.
d. She can be 95% confident that the true mean number of robberies is not between 3.2 and 6.7.
b. She can be 95% confident that the true mean number of robberies falls between 3.2 and 6.7.
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