In a sample of 22 people, the average cost of a cup of coffee is $2.83. Assume the population standard deviation is $1.01. What is the 90% confidence interval for the cost of a cup of coffee?

Ans. Choices

($2.45, $3.21)

($2.54, $3.12)

($2.55, $3.11)

($2.48, $3.18)