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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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Mserna19 Mserna19
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6 years ago
The manager of a grocery store has taken a random sample of 100 customers. The average length of time it took the customers in the sample to check out was 3.1 minutes. The population standard deviation is known to be 0.5 minute. We want to test to determine whether or not the mean waiting time of all customers is significantly more than 3 minutes. At a .05 level of significance, it can be concluded that the mean of the population is _____.
 a. significantly greater than 3
  b. not significantly greater than 3
  c. significantly less than 3
  d. significantly greater than 3.18
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MacdonaldcMacdonaldc
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6 years ago
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6 years ago
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