Grant spent 2.50,$4.00,$4.25, and $3.25? on breakfast one week. the next week he spent $6 more in total for the 4 breakfasts than the week before. what is the increase in the mean for the second compared to the first

The mean increased by $1.5 and percent increase is 42.85%.

Step-by-step explanation:

Formula for mean:

It is given that Grant spent $2.50, $4.00, $4.25, and $3.25 on breakfast one week.

Total money spent by him in first week is

Mean for first week is

The next week he spent $6 more in total for the 4 breakfasts than the week before.

Total money spent by him in second week is

Mean for second week is

Increase in mean

Therefore the mean increased by $1.5.

Percent increase in mean is

Therefore the mean increased by $1.5 and percent increase is 42.85%.

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