1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
12345 [234]
3 years ago
7

Hannah claims that people who live in southern states spend 9 hours more per week outside than do people in northern states. She

selects a random sample from each group. The mean number of hours per week that people in southern states spent outside is 18.6, and the mean number of hours per week that people in northern states spent outside is 14.4. A 99 percent confidence interval to estimate the difference in population means (southern minus northern) is (0.4,8.0).
Mathematics
1 answer:
Aneli [31]3 years ago
5 0

Answer: Hello your question is incomplete below is the missing part

Which of the following statements about Hannah’s claim is supported by the interval?

A) Hannah is likely to be incorrect because the difference in the sample means was 18.6−14.4=4.218.6−14.4=4.2 hours.

B) Hannah is likely to be incorrect because 9 is not contained in the interval.

 C)The probability that Hannah is correct is 0.99 because 9 is not contained in the interval.

 D)The probability that Hannah is correct is 0.01 because 9 is not contained in the interval.

 E)Hannah is likely to be correct because the difference in the sample means (18.6−14.4=4.2)(18.6−14.4=4.2) is contained in the interval.

Answer :  Hannah is likely to be incorrect because 9 is not contained in the interval. ( B )

Step-by-step explanation:

The statement that is supported by the interval in Hannah's claim is that

Hannah is likely to be incorrect because 9 is not contained in the interval.

You might be interested in
Rectangle EFGH is rotated 90° clockwise around the origin. What are the coordinates of the image point F?
denpristay [2]

Answer:

3 -5 on edg

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Which best describes the polygon whose vertices in the coordinate plane are (-2, 3), (2,3), (2, -1), (-2, 1)?
kondaur [170]

You can see the polygon in the attached figure.

It's a trapezoid, so it's not equilateral, nor regular.

4 0
3 years ago
The cost C, in dollars, to have medical records transcribed is a function of time, t in hours. A physician's group spends C(t) =
Contact [7]

Answer:

B. $39550

Step-by-step explanation:

The expression for the function is not well-formatted, find the correct format in the solution bellow

Step one:

given data

We are told that the function of the cost is

C(t) = 0.04t^3- 0.1t^2 + 5.5t

instantaneous rate c(t) is the value obtained when we plug in 100 for t in the function above

substituting we have

C(t) = 0.04(100)^3- 0.1(100)^2 + 5.5(100)\\\\\C(t) = 0.04*1000000- 0.1*10000 + 5.5*100\\\\C(t) = 40000-1000+550\\\\C(t) = 39550

$39550

3 0
2 years ago
2. Pam is making fruit baskets. She has 30 apples and 24 bananas.
Digiron [165]

Answer:

Six  

Step-by-step explanation:

\dfrac{\text{apples}}{\text{bananas}} =\dfrac{30}{24}

Find the greatest common factor of each number.

Factors of 30 = 1, 2, 3,    5, 6,    10,    15,    30

Factors of 24 = 1, 2, 3, 4,    6, 8,     12,    24

The greatest common factor of 30 and 24 is 6.

Jane can make six fruit baskets if she divides the fruit evenly among them.

6 0
3 years ago
Calculate the angle of a sector of 50° and a radius of 4cm
Anastasy [175]

Answer: 20π/9 cm²

Step-by-step explanation:

Central angle is given as = 50°

We should note that for a complete circle to be made, it needs 360∘. Therefore, this is 50/360 = 5/36 of the area of a sector.

Area of the sector = 5/36 × πr².

= 5/16 × π × 4²

= 5/36 × π × 16

= 80π/36

= 20π/9 cm²

7 0
3 years ago
Other questions:
  • A store is having a sale on chocolate chips and walnuts. For 3 pounds of chocolate chips and 5 pounds of walnuts, the total cost
    13·1 answer
  • Plz help me get the answer to these
    15·2 answers
  • WORTH 30 POINTS
    9·1 answer
  • The table shows the scores of 20 students on a history test. What is the average student score?
    10·1 answer
  • A parking lot has a total of 60 cars and trucks. the ratio of cars to trucks is 7:3. how many cars are in the parking lot? how m
    6·1 answer
  • A line segment is drawn from (1, 9) to (4, 9) on a coordinate grid.
    10·1 answer
  • What is -15÷3 please help me with this <br>​
    8·2 answers
  • Kaitlyn is remodeling her kitchen the table shows the cost of items she wants to buy with her credit card it Kaitlyn has a $2,00
    11·1 answer
  • What is the answer to (-15,12),(-9,12)
    6·1 answer
  • Find the gradient of the line 3y=2x/3+4​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!