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Black_prince [1.1K]
3 years ago
14

A cell phone service provider has selected a random sample of 20 of its customers in an effort to estimate the mean number of mi

nutes used per day. the results of the sample included a sample mean of 34.5 minutes and a sample standard deviation equal to 11.5 minutes. based on this information, and using a 95 percent confidence level:
Mathematics
1 answer:
oksian1 [2.3K]3 years ago
8 0
So, we are doing mean and median range
or another else
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