Discussion:
Q: The association of coffee growers in Puerto Rico wants to know the average pounds of coffee consumption per week in towns in the metropolitan area. In a study conducted recently by the average of 81 persons was 1.5 pounds a week and a standard deviation of 0 .10.
1) What is the value of the average population?
2) What distribution we have to use, z or t?
3) What is the value of t for a confidence level of 95%?
4) Construct a confidence interval of 95% for the population mean.