The standard deviation for the amount of trash that Americans generate per day is 1.3 pounds. You are interested in finding a 90% confidence interval for the mean amount of trash that Americans generate per day. The data below show pounds of trash generated by 13 randomly selected Americans. 4.1, 5.3, 4.2, 3.7, 5.4, 5.8, 2.4, 5.2, 4.5, 3.8, 3.1, 6.0, 5.3 Assume a normal distribution and round your answers to two decimal places. A. To compute the confidence interval, use the__________distribution. [ Select ] T or Normal B. With 90% confidence the population mean amount of trash generated by each American per day is between [ Select ] ["4.15", "3.93", "3.74", "3.22"] and [ Select ] ["5.67", "4.98", "5.99", "5.12"] pounds. C. If many groups of 13 randomly selected Americans are observed, then a different confidence interval would be produced from each group. About [ Select ]["90", "5", "95", "10", "50"] percent of these confidence intervals will contain the true population mean amount of trash generated per day per person and about [ Select ]["50", "90", "10", "5", "95"] percent will not contain the true population mean amount of trash generated.
The standard deviation for the amount of trash that Americans generate per day is 1.3 pounds. You are interested in finding a 90% confidence interval for the
4.1, 5.3, 4.2, 3.7, 5.4, 5.8, 2.4, 5.2, 4.5, 3.8, 3.1, 6.0, 5.3
Assume a
A. To compute the confidence interval, use the__________distribution. [ Select ] T or Normal
B. With 90% confidence the population mean amount of trash generated by each American per day is between [ Select ] ["4.15", "3.93", "3.74", "3.22"] and [ Select ] ["5.67", "4.98", "5.99", "5.12"] pounds.
C. If many groups of 13 randomly selected Americans are observed, then a different confidence interval would be produced from each group. About [ Select ]["90", "5", "95", "10", "50"] percent of these confidence intervals will contain the true population mean amount of trash generated per day per person and about [ Select ]["50", "90", "10", "5", "95"] percent will not contain the true population mean amount of trash generated.
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