A sample of 5 months of sales data can be found in Excel below:

Month | Units Sold

1 | 94

2. | 100

3. | 86

4. | 94

5. | 91

Develop a point estimate of the population mean number of units sold per month (to 1 decimal).

93

Develop a point estimate of the population standard deviation (to 2 decimals).

3. mr. sanchez’s class sold fruit pies for $1.65 each and mr. kelly’s class sold bottles of fruit juice for $1.36 each. together, the classes sold 79 items and earned $118.17 for their school. (a) write and solve a system of equations that model the problem. show all your work. (b) which class earned more money? (c) how much more money did that class earn?