Using technology find out standard deviation for the data

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Reference no: EM13470903

How long does it take to commute from home to work? It depends on several factors including route, traffic, and time of departure. The data below are normally distributed results (in minutes) from a random sample of 8 trips.

1. Using technology, determine the mean for this data.

2. Using technology, determine the standard deviation for this data.

3. Should you use the critical value (zc) or (tc) in determining a confidence interval in this problem? Explain.

4. Use these data to create a 95% confidence interval for the population mean time of the commute.

Reference no: EM13470903

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