What is the critical value z* for constructing an 80% confidence interval?

Answers

Answer 1

Answer:khan is 1.282 or c

Step-by-step explanation:


Related Questions

Calculate the mean for each set of data.
a 12, 18, 9, 14, 8, 7​

Answers

Answer:

11.3, rounded

Step-by-step explanation:

mean = average. Add them all up, then divide by how many entries/data points you have.

12 + 18 + 9 + 14 + 8 + 7 = 68

There are 6 numbers we added, so 68/6 = 11.3333333

Please let me know if you have questions.

__________________————-

195.43 rounded to the nearest 10th

Answers

Answer is

195

or if you actually mean a tenth it would be

100

The function f(x)=(25)x
is shown on the coordinate plane. Which statement is true?

Answers

Answer: In the right end, as x increases without bound, the graph of f(x) decreases.

In the left end, as x decreases without bound, the graph of f(x) increases.

Step-by-step explanation:

According to the graph, the end behaviour of the function in the image is decreasing without bound. When we graph a function, with put an arrow to indicate when a function increases or decreases without bound, that's why in this case we can say the decreases without bound, the function extends without limit.

Therefore, as the x increases, f(x) decreases. If you carefully pay attention to the graph, x is constantly increasing in the right end, and f(x) is more and more close to the x-axis.

Help!! Il give brainlest to the right one

Answers

Answer:

Blue

Step-by-step explanation:

Answer:

multiply 6 on both sides

Step-by-step explanation:

you multiply 6 on both sides to get x by its self so your answer in total would be 21

Teresa is going to make 3 batches of cookies. She needs 3/4 milk for each. Her measuring cup only holds 1/4 gallon. How many tines will she need to fill up the measuring cup 3 times

Answers

Given :

Teresa is going to make 3 batches of cookies.

She needs 3/4 milk for each. Her measuring cup only holds 1/4 gallon.

To Find :

How many times will she need to fill up.

Solution :

Amount of milk need per batch, A = 3/4 gallon.

Measuring cup only holds, m = 1/4 gallon.

Number of times she need to fill up,

n = A/m = (3/4)/(1/4) = 3

Now, number of batches are three.

So, number of time she need to fill up in three batch.

[tex]N = n \times 3 \\\\N = 3 \times 3 \\\\N = 9[/tex]

Therefore, this is the required solution.

Please help. Which choice describes the shape of the data?

Answers

Answer:

?

Step-by-step explanation:

in a school the number of girls exceeds the number of boys by 15% find the ratio number of boys to number of girls

Answers

Answer:

20:3

Step-by-step explanation:

no.of boys /no.of girls =20:3

Who can help me with my homework for free

Answers

text me off of here ................

Answer:

me ig

Step-by-step explanation:

JUHE
Carlos says that the first step to solve this equation is to divide
both sides by -7. Is he correct? Explain.

Answers

The answer is 21 because that’s when I finally touch a goldfish
The correct answer is twenty one

daniel uses a 20.00 bill to purchase an item that costs d dollars. Write an equation to represent the amount of chnage c that he should receive?

Answers

Answer:

c= 20.00-d

Step-by-step explanation:

Plz help ASAP I will mark u branliest

Answers

Answer:

5.k=3

7.p=4

Step-by-step explanation:

5.7=2k+1

7=2k+1 subtract 1 on both sides

6=2k divide by 2 on both sides

k=3

7. 11=4p-5

11=4p-5 add 5 to both sides

16=4p divide by 4 on both sides

p=4

Answer:

5: k=3  

7: p=4

Step-by-step explanation:

5: sub 1 from each side divde by 2

7: add 5 to both sides  divide each side into 4

Which graph represents the parametric equations x(t) = t + 3 and y(t) = t2 – 1 for –1 ≤ t ≤ 3?

Answers

Answer:

Graph 4 or D on edge

Step-by-step explanation:

guy above is correct

The formula that is used for calculating a parametric equation when converting from rectangular to parametric is y=f(x)

What is a Parametric Equation?

This refers to the type of equation that is used to show an independent variable called a parameter, usually with the number 1.

Please note that your question is incomplete so I gave you a general overview to give you a better understanding of the concept.

Read more about parametric equations here:

https://brainly.com/question/51019

write an equation for the graph​

Answers

Answer:

In standard form: y = 1(-2) + 2

Step-by-step explanation:

y=mx+b

m is the slope (calculate with rise over run, 2/2 is 1)

x is the x intercept (in this case -2)

b is the y intercept (in this case 2)

A rectangle is plotted on a coordinate plane. The four vertices are located at (−5,5), (−5,−3), (2,5), and (2,−3). What is the area of the rectangle?

The area of the rectangle is ______ square units.

Answers

Answer:

56 square units

Step-by-step explanation:

I'd recomend using something like "Desmos" to plot the points so then you can see the points and the rectangle. Then count the length and width. For the this rectangle the length was 8 and the width was 7, multiply these and you get the answer of 56 sqaure units.

Please helppppp
In GHI the measure angle I = 90° the measure of angle G = 5° and IG = 57 feet. Find the length of GH to the nearest tenth of a foot

Answers

Answer:

GH = 57.2 feet

Step-by-step explanation:

Given the following

m<I = 90 degrees

<G = 5 degrees

IG = 57 feet

Required

Length of GH

According to the data given

GH is the hypotenuse

iG is the adjacent side to m<G

Cos theta = adj/hyp

Cos 5 = IG/GH

Cos 5 = 57/GH

GH = 57/cos 5

GH = 57/0.9962

GH = 57.2 feet

Answer: 57.2 feet

Step-by-step explanation:

what is the answer for this, I have to solve the proportion,
n/18 = 12/7.5

Answers

Answer:

n = 28.8

Step-by-step explanation:

[tex]\frac{n}{18} =\frac{12}{7.5}[/tex]

n × 7.5 = 18 × 12

7.5n = 216

7.5n ÷ 7.5 = 216 ÷ 7.5

n = 28.8

Sam has worn a green shirt on 10 of the last 20 days. Considering this data, how many times
would you expect Sam to wear a green shirt in the next 12 days?

Answer quickly

Answers

I think it is 6 because 10 is half of 20 so 6 is half of 12

Sam should wear green shirt for 6 days in next 12 days.

What is fraction?

Fraction is a number that represent part of a whole quantity. It has two parts, numerator and denominator, the number above the horizontal line is numerator, and number under the the line is denominator.

Given,

Sam wore green shirt on 10 of the last 20 days

Fraction of days the wearing green shirt to total days = 10/20 = 1/2

Number of days of wearing green shirt in next 12 days

= 12 × 1/2

= 6 days

Hence, in next 12 days, Sam should wear green shirt for 6 days.

Learn more about ratio here:

https://brainly.com/question/10354322

#SPJ6

Point P is plotted on the number line. Point Q is the opposite of point P. Determine the location of point Q on the number line. Explain how you determined the location of point Q on the number line.

Answers

Answer:

Point Q is in between -3 and -2

Step-by-step explanation:

Point P is in between 2 and 3 so now do the opposite.

find the value of x in this screenshot

Answers

Answer:

X=24

Step-by-step explanation:

3x+5+2x-4+2x+11=180

7x+12=180

7x=180-12

7x=168

7x/7=168/7

x=24

Graph f(x) = 6x^2-11+3 and
find the zeroes

Answers

Answer:

x = ±1.155

Step-by-step explanation:

We need to graph the given function [tex]f(x) = 6x^2-11+3[/tex] and find its zeroes.

The attached figure shows the graph of the given function.

To find zeroes,

Put f(x) = 0

So,

[tex]6x^2-11+3=0\\\\x=\pm 1.155[/tex]

Hence, this is the required solution.

Can someone please help me with this math question??

Answers

because the majority of the ppl who answered had 3 pets

10) A basketball player attempts two free
throws. Each attempt results in a score or
a miss.
A) {(S, S), (M, M)}
B) {(S, S), (S, M)}
C) {(S, S), (S, M),
(M, S), (M, M)}
D) {(S, S), (M, S)}

Answers

It’s c. I hope it helped
The correct answer is letter B

Solve for y: -5y + 6 = 16​

Answers

Answer:

y= -2

Step-by-step explanation:

Answer:

[tex]y=2[/tex]

Step-by-step explanation:

Well first move the 6 to the right side to isolate the y by taking 6 away from both sides to get [tex]-5y=10[/tex]. Then divide both sides by -5 to get [tex]y=2[/tex]. Hope this helps!

Pls mark brainliest!

- A rectangle with sides measuring 12 cm x 16 cm has a
diagonal drawn in it. What is the perimeter of each of
the resulting congruent triangles?

Answers

Answer:

48cm

Step-by-step explanation:

Given data

Dimension

12cmx16cm

Before we can get the perimeter of the resulting triangles

let us find the length of the diagonal

Diagonal

D^2= 12^2+ 16^2

D^2= 144+256

D^2= 400

D=√400

D=20cm

Hence the diagonal is 20cm

Therefore the perimeter of each triangle is

=12+16+20

=48cm

HELP FAST I'LL MARK YOU BRAINLIEST
Which below is not always true about a Rhombus?
1. All side are equal
2. Opposite sides are equal and congruent
3. Consecutive angles are supplementary
4. Diagonals are congruent

Answers

Answer:

4

Step-by-step explanation:

In a rhombus, the diagonals are congruent. It is not always true. If the diagonals become congruent then It becomes square. Hope this helps!

Answer:

4) Diagonals are congruent is NOT always true

Step-by-step explanation:

Diagonals are  only congruent if it's square, so this one is not always true.

Help me please! This is due today!​

Answers

Answer:

the question is fillped i can not see the questions

Step-by-step explanation:

The triangle below has an area of 54 ft squared and a 9 ft base. What is the height of the triangle?

Answers

Answer:

height of triangle= 12

Step-by-step explanation:

A= 1/2bh

54=1/2(9)h

54= 4.5h

54/4.5= 4.5/4.5

h= 12

Solve the following quadratic equations using factoring.
a. x2 + 10x + 24 = 0

Answers

Answer:

x = - 6, x = - 4

Step-by-step explanation:

Given

x² + 10x + 24 = 0 ← in standard form

(x + 6)(x + 4) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 6 = 0 ⇒ x = - 6

x + 4 = 0 ⇒ x = - 4

Rosa is making a game board that is
16 inches by 24 inches. She wants to
use square tiles. What is the largest
tile she can use?

Please show working

Answers

Answer:

8" by 8"

Six of those will fit on the board

Step-by-step explanation:

Answer:

The largest tile she can use is a 8 inches by 8 inches tile.

Step-by-step explanation:

Rosa is making a game board that is 16 inches by 24 inches.

She wants to use square tiles.

The area of the game board (area of  a rectangle) is equal to length times width.

∴ Area = 16 inches × 24 inches = 384 square inches

The prime factors of 384 are; 2^7 × 3

We can put it as;

2^6 × 6 = 384

The square root of 2^6 is 2^3 = 8

So Rosa will need six square tiles of 8 inches by 8 inches each.

Hence the largest tile she can use is a 8 inches by 8 inches tile.

i need help with the graph problems,under the do now question

Answers

Can’t see the image you shared on here sorry
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