3. The teachers union is concerned about the amount of time teachers spend each doing schoolwork at home. A simple random sample of 56 teachers had a mean of 8.0 hours per
week working at home after school. Assume that the population standard deviation is 1.5
hours per week.
a) Construct a 95% confidence interval estimate for the mean number of hours per week a
teacher spends working at home.
b) Does the confidence interval support that teachers work at home after school more than 10
hours a week? Why or why not?

m∠vru = 80°

m∠urw = 15°

step-by-step explanation:

anser is a

step-by-step explanation:

negitive slope

step-by-step explanation:

i think something is missing in your question because y-1=(x-12) would not pass through the point (-4,-3). because if you replace x by -4 your are supposed to find y=-3 which is not the case her. if you replace x by -4 you find =-15.

i assume the right equation is y-1=1/4*(x-12) because this one is passing through both your points (if you are interested to know how i found that out i can tell you).

in this equation if i replace x by -4 i find y=-3 and if i replace x by 12, i find y=1 so the line representing this equation is passing through those 2 points.

then the standard form of the equation is finding an expression of y in function of x

y-1=1/4*(x-12)

y=x/4-3+1

y=x/4-2

hope that .

do you confirm there was a mistake in the question?