1. consider a normal population distribution with the value of s known. a. what is the confidence level for the interval ? b. what is the confidence level for the interval ? c. what value of in the ci formula (7.5) results in a confidence level of 99.7%? d. answer the question posed in part (c) for a confidence level of 75%. 2. each of the following is a confidence interval for m true average (i. e., population mean) resonance frequency (hz) for all tennis rackets of a certain type: (114.4, 115.6) (114.1, 115.9) a. what is the value of the sample mean resonance frequency? b. both intervals were calculated from the same sample data. the confidence level for one of these intervals is 90% and for the other is 99%. which of the intervals has the 90% confidence level, and why? za/2 1.44s/ 1n x 6 2.81s/ 1n x 6

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

none.

step-by-step explanation:

m

1

=

5

m1=5

b

=

−

1

b=-1

find the slope and y-intercept of the second equation.

tap for more

m

2

=

0

m2=0

b

=

−

6

b=-6

compare the slopes

m

m of the two equations.

m

1

=

5

,

m

2

=

0

m1=5,m2=0

compare the two slopes in the decimal form. if the slopes are equal, then the lines are parallel. if the slopes are not equal, then the lines are not parallel.

m

1

=

5

,

m

2

=

0

m1=5,m2=0

sorry not knowing about that

the answer is 0052

0 0 5 2

5 0 2 6 3 5

− 0

2 6

− 0

2 6 3

− 2 5 0

1 3 5

− 1 0 0

3 5