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GuDViN [60]
3 years ago
10

A catalog sales company promises to deliver orders placed on the Internet within 3 days.​ Follow-up calls to a few randomly sele

cted customers show that a​ 95% confidence interval for the proportion of all orders that arrive on time is 70​%±88​%.
A. What does this​ mean? For each​ conclusion, state whether it is correct or not and explain why. Complete parts a through e below. ​
B. Between 62​% and 78​% of all orders arrive on time. State whether the conclusion is correct or not and explain why. Choose the correct answer below.
Mathematics
1 answer:
Tju [1.3M]3 years ago
3 0

Answer:B. Between 62​% and 78​% of all orders arrive on time. State whether the conclusion is correct or not and explain why. Choose the correct answer below.

Step-by-step explanation:

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What is the solution to the inequality 0.8x+20<1.2x−40?
LuckyWell [14K]

Answer:x=150

Step-by-step explanation:

Step 1: Subtract 1.2x from both sides.

0.8x+20−1.2x=1.2x−40−1.2x

−0.4x+20=−40

Step 2: Subtract 20 from both sides.

−0.4x+20−20=−40−20

−0.4x=−60

Step 3: Divide both sides by -0.4.

−0.4x

−0.4

=

−60

−0.4

3 0
3 years ago
Which is closest to the total surface area of a cylinder with a radius of 5 inches and a height that is equal to its diameter?
Pie
For this case, the surface area of the cylinder is given by:
 A = 2 * pi * r * h + 2 * pi * r ^ 2
 Where.
 r: cylinder radius
 h: cylinder height
 Substituting values we have:
 A = 2 * 3.14 * 5 * (2 * 5) + 2 * 3.14 * 5 ^ 2
 A = 471
 Answer:
 
The total surface area of the cylinder is:
 
A = 471
5 0
3 years ago
Read 2 more answers
Quadrilateral ABCD is reflected across the x -axis. What are the coordinates of quadrilateral A'B'C'D'? A. A' (5, –5), B' (1, –5
Yuki888 [10]

Answer:

=76559

Step-by-step explanation:

foggy

5 0
3 years ago
Write two different word phrases for the expression (52+8) 30
zepelin [54]

Answer:

1. The product of thirty and eight more than fifty-two.

2. Thirty times the sum of eight and fifty-two

Step-by-step explanation:

 1) 52+8 (eight more the fifty-two )

      52+8 (The product of thirty and eight more than fifty-two.)

       

2) 52+8 (The sum of eight and fifty-two)

     52+8 (Thirty times the sum of eight and fifty-two)

3 0
3 years ago
Read 2 more answers
2 members of the 5-member math study group will present their project to the class. How many combinations of 2 members are possi
klio [65]

Answer:

2

Step-by-step explanation:

(,)=?

(,)=(5,2)

=5!(2!(5−2)!)

=5!2!×3!

= 10

4 0
3 years ago
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