find a research study in any area of interest to you that involves hypothesis testing. Describe the study, hypothesis test, null/alternative hypothesis, alpha value, one or two-tailed test, results, and inferences made. Please make sure you cite references to any sources you use for this question. Provide a link to the actual study so that classmates can review the hypothesis test data. Explain the inferences you make from these results, importance of this data in general, how it relates to your life, and what you find interesting about the study.

answer: add the !

step-by-step explanation: then we will answer

-7

step-by-step explanation:

x^2 + 18x + 74 = (x + 9)^2 - 81 + 74

= (x + 9)^2 - 7.

so q = -7.

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

yes

step-by-step explanation:

yes