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OpenStudy (anonymous):
Suppose that a customer service center claims that the telephone calls it receives last 113 seconds on average, with a standard deviation of 9 seconds. If you took a sample of 324 telephone calls, which of the following mean times would be within the 95% confidence interval? A. 116.5 seconds B. 114.5 seconds C. 113.5 seconds D. 115.5 seconds
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OpenStudy (anonymous):
i think c
OpenStudy (anonymous):
kk<3
OpenStudy (anonymous):
<3
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