Use the given information to find the number of degrees offreedom, the critical values chi subscript upper l superscript 2χ2l and chi subscript upper r superscript 2χ2r, and the confidence interval estimate of sigmaσ. it is reasonable to assume that a simple random sample has been selected from a population with a normal distribution. nicotine in menthol cigarettes 99%confidence; n = 26, s = 0.29 mg.

df = (type a whole number.)

χ2l = (round to three decimal places as needed.)

χ2r = (round to three decimal places as needed.)

the confidence interval estimate of σ is __ mg < σ < __ mg. (round to two decimal places as needed.)

let's cover over the formula of the vertex:

y = a(x – h)^2 + k

in this formula, (h,k) are the vertex, always remember that the positive or negative value of the vertex is based on the sign it has.

for example, if the vertex is -3,-6 then both the x and y value would have the positive sign attached to it and if it were a positive x and y value, then a negative sign would be attached to it.

with that being said, for our problem the x value is a positive one so we are looking for a number with a negative sign next to it, in this case the first and second choice.

however, for the first answer choice it isn't quite part of the formula so we know that the answer choice correctly displays the x value.

to confirm, we can see if the -1 fits correctly with the second answer choice, and as mentioned above a negative number will have a positive sign attached to it. so, for our problem we can see that -1 has been changed to +1, so we can confirm that the second answer choice is correct.

hence, our final answer is y=(x - 1)^2 + 1

b mark me branliest thx

step-by-step explanation:

ok so what's the question?

step-by-step explanation: