The amounts of coffee dispensed from the vending machine fol…

The amounts of coffee dispensed from the vending machine follow a bell-shaped symmetric distribution.  In a sample of 50 cups of coffee dispensed from the vending machine, the mean amount dispensed was 7.6 ounces with a standard deviation of 0.2 ounces. Classify the statement: About 95% of sampled cups dispensed from the vending machine have between 7.2 and 8 ounces of coffee.

A financial analyst wanted to study the distribution of the…

A financial analyst wanted to study the distribution of the weekly amounts spent on groceries by a US household.  He collected a sample of US households, recorded the data (using $), and constructed the following table.  Classify the statement: Almost 9% of households in a sample spend at least $401 weekly on groceries.