Question

At devon's new job he spent $12.99, $10.50, $9.89, $6.90, and $7.58 on lunch the first week. in the second week, he spent $2 more in total for the 5 lunches than the first week. what is the increase in the mean for the second week compared to the first? round the answer to the nearest penny. enter your answer in the box. $

Answer 1

First week, Devon's spent $12.99, $10.50, $9.89, $6.90 and $7.58
Mean = (12.99 + 10.50 + 9.89 + 6.90 + 7.58)/5
Mean = 47.86/5
Mean = 9.572

Second week Devon spent $2 more for the total five lunches
so, Mean = (47.86 + 2)/5
Mean = 9.972

The increase in the mean for the second week compared to the first week is
9.972 - 9.572
0.4 Answer

Answer 2

mean is increase by 0.4 ( answer is attached )