Answer:
First, let’s calculate the money Sam makes per week, not including sales (or assuming $0 in sales):
money per week =$6.45/hour×37.5hours/week=$241.88/week
The money he gains from sales must make up the difference, so
money from sales =$400−$241.88=$158.12
This money is only 6% or 0.06 of the total sales though, so
total sales =$158.120.06=$2635.33
Of course, this is assuming that the money per week is rounded up from $241.875 to $241.88 instead of down to $241.87, in which case Sam would have to make $2635.50 in sales (about 17 cents more).
Answer:
The 95% confidence interval is from 64 to 88
Step-by-step explanation:
The confidence interval has two values.
The lower limit, that is the mean subtracted by the margin of error.
The upper limit, that is the mean added to the margin of error.
So the 95% confidence interval is
76-12 to 76+12 = 64 to 88
