The Taylors have recorded their weekly grocery expenses for the past 12 weeks and determined that the mean weekly expense was $

Question

3 years ago

12

.82.55. Later Mrs. Taylor discovered that one week's expense of $74 was incorrectly recorded as $47. What is the correct mean?

1 answer:

SVETLANKA909090 [29] · Answer 1 · 2022-09-11T10:30:18+03:00

Answer:

$84.80

Step-by-step explanation:

find the difference between accurate price and written price: 74 - 47 = 27

find written total (before Mrs. Taylor found mistake) by undoing the mean calculation: 82.55 x 12 = $990.60

the total expenses is $27 more than what they thought: 990.60 + 27 = 1017.60

divide accurate total by 12 to find mean: 1017.60 / 12 = $84.80

hope this helps :)

The Taylors have recorded their weekly grocery expenses for the past 12 weeks and determined that the mean weekly expense was ​$