The table down shows the cost per pound of food items you can buy in bulk grocery store. Mrs. linden bought 1.25 pounds of dried fruit and 0.5 pound of cereal. If Mrs. linden paid for her items with $5 bill, how much change will she receave? item cost
beans 2.86
cereal 2.38
dried fruit 1.84
rice 0.52

Describe in detail how you would construct a 95% confidence interval for a set of 30 data points whose mean is 20 and population standard deviation is 3. be sure to show that you know the formula and how to plug into it. also, clearly state the margin of error.

Write the following as a base and exponent

The administrator of a large assisted living facility wanted to know the average age of the residents living at the facility. he randomly selected 12 residents and determined their age, listed here: 80, 65, 75, 83, 68, 73, 88, 79, 94, 72, 79, 68 what's the average age of the sample of residents? a. 79 years old b. 68 years old c. 75 years old d. 77 years old