The number of wins in a season for 32 randomly selected professional football teams arelisted below. construct a 90% confidence interval for the true mean number of wins in a season. mean(x) = sum of 32 observations / 32 = 7.97 standard deviation( sd )=2.62 sample size(n)=32 confidence interval = [ 7.97 ± z a/2 ( 2.62/ sqrt ( 32) ) ] = [ 7.97 - 1.64 * (0.4632) , 7.97 + 1.64 * (0.4632) ] = [ 7.2,8.7 . what are the steps used to solve this? how did they find their standard deviation? also what does the z stand for in the confidence interval?

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column

what are you doing do you need examples of variable questions?

step-by-step explanation:

5a-1=9               bring the one over the =

5a=10                     divide by your variable

a=2

brainliest? ?

here try this one

3a-24=0

answer: n word

step-by-step explanation:

what type of people are in the hood?

what steals your tv in the dark and you cant see them?

2y+y=5

add 2y and y