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
serg [7]
3 years ago
10

In a controlled laboratory environment, a random sample of 10 adults and a random sample of 10 children were tested by a psychol

ogist to determine the room temperature that each person finds most comfortable. The data are summarized below. Suppose that the psychologist decides to construct a 99% confidence interval for the difference in mean comfortable room temperatures instead of proceeding with a test of hypothesis. The 99% confidence interval turns out to be (-2.9, 3.1). Select the correct statement.
Sample Mean Sample Variance
Adults 77.5 4.5
Children 74.5 2.5
a) It cannot be concluded at the 99% confidence level that there is actually a difference between the true mean comfortable room temperatures for the two groups.
b) It can be concluded at the 99% confidence level that the true mean room temperature for adults exceeds that for children.
c) It can be concluded at the 99% confidence level that the true mean comfortable room temperature for children exceeds that for adults.
d) The probability that the true mean difference in comfortable room temperature is between -2.9 and 3.1 is equal to 0.99.
Mathematics
1 answer:
Semmy [17]3 years ago
8 0

Answer:

a) It cannot be concluded at the 99% confidence level that there is actually a difference between the true mean comfortable room temperatures for the two groups.

Step-by-step explanation:

You might be interested in
Look at the graph of the equation y = 5x. Which statement is true?
Ugo [173]

Answer:

B).  As x increases by 1,  y increases by 5.

Step-by-step explanation:

When x = 1, y = 5

when x = 2, y = 10

when x = 3, y = 15.

So it is B

As x increases by 1,  y increases by 5.

8 0
3 years ago
Each day 1035 new apps uploaded to a web server.After 28 days,how many apps would have been uploaded
Alona [7]
1035 times 28=number of new apps=28980

4 0
3 years ago
Read 2 more answers
What are the greatest common factor of 4K,18k,and 12
Ulleksa [173]
Greatest common factor or GCF is the greatest factor that divides two numbers. So the get the greatest common factor of the 4k 18k and 12 you need to list the prime factors of each number then multiply both numbers have in common. So the greatest common factor of the numbers is 2 
6 0
3 years ago
Read 2 more answers
need a lot of help
marishachu [46]
2.60 x 12 3/4

2.60 x 12.75 (convert to decimal)

= $33.15, which is not listed.
3 0
2 years ago
I need help pls! A group of hikers park their car at a trail head and hike into the forest to a campsite. The next morning, they
statuscvo [17]

Answer:

Look down below ;)

Step-by-step explanation:

How far is the campsite from their car?

4 miles

(0,4)

Write an equation that describes the relationship between d and h.

d = 3h + 4

After how many hours will the hikers be 16 miles from their car?

16 = 3h + 4

12 = 3h

4 = h

After 4 hours

5 0
3 years ago
Other questions:
  • The endpoints of the diameter of a circle are (–3, –6) and (–7, 8). Find the x-coordinate of the center of the circle.
    14·1 answer
  • two airplanes leave an airport at the same time and travel opposite directions. one plane travels 81 km/h slower than the other.
    10·1 answer
  • 1/4 inch cubes were used to fill a prism. The dimensions of the prism are 1.5 inches x 1 inch x 3.75 inches. How many 1/4 inch c
    12·1 answer
  • What is 5 times three
    13·2 answers
  • Can y’all help with these to answer?
    6·2 answers
  • En el cumpleaños de Manolito se inflaron 144 globos. Los 2/9 de los globos eran rojos; los 5/18, verdes y 1/6 eran amarillos. ¿C
    11·1 answer
  • Find the circumference of the figure
    7·1 answer
  • An aquarium owns 4 identical tanks. All together, the tanks can hold 9,612.5 gallons of water. How much water can each tank hold
    7·2 answers
  • Line Segment LM is the midsegment of the isosceles trapezoid ABCD. Find
    5·2 answers
  • GIVING BRAINLIEST!!!!!
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!