Respuesta :
The correct answer is:
$0.40.
Explanation:
To find the mean of the lunch costs for the first week, we first add together all of the amounts he spent on lunch that week:
$12.99+$10.50+$9.89+$6.90+$7.58 = $47.86.
Now we divide this by the number of lunches, 5:
47.86/5 = $9.572 ≈ $9.57.
The second week he spends a total of $2 more on lunch. Adding this to the first week's total, we have:
47.86+2 = $49.86.
To find the mean, we divide this by the number of lunches in the second week, 5:
49.86/5 = $9.972 ≈ $9.97.
The mean increased from the first week to the second week by 9.97-9.57 = $0.40.
$0.40.
Explanation:
To find the mean of the lunch costs for the first week, we first add together all of the amounts he spent on lunch that week:
$12.99+$10.50+$9.89+$6.90+$7.58 = $47.86.
Now we divide this by the number of lunches, 5:
47.86/5 = $9.572 ≈ $9.57.
The second week he spends a total of $2 more on lunch. Adding this to the first week's total, we have:
47.86+2 = $49.86.
To find the mean, we divide this by the number of lunches in the second week, 5:
49.86/5 = $9.972 ≈ $9.97.
The mean increased from the first week to the second week by 9.97-9.57 = $0.40.
The increase in the mean for the second week compared to the first with the given parameters is; $0.40
What is the average increase?
Let us first find the mean of the lunch costs for the first week;
Mean for first week = ($12.99 + $10.50 + $9.89 + $6.90 + $7.58)/5 = $9.572
We are told that he spends a total of $2 more on lunch in the second week.
Second week total = $12.99 + $10.50 + $9.89 + $6.90 + $7.58 + $2 = $49.86.
Mean of second week = 49.86/5 = $9.972
The increase in the mean for the second week compared to the first is;
9.972 - 9.572 = $0.40
Read more about average increase at; https://brainly.com/question/11360390
