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
storchak [24]
3 years ago
11

At one school, the average amount of time that spend watching television each week is The principal introduces a campaign to enc

ourage the students to watch less television. One year later, the principal wants to perform a hypothesis test to determine whether the average amount of time spent watching television per week has decreased from the previous mean of
Mathematics
1 answer:
faltersainse [42]3 years ago
4 0

Answer:

21.6 hours

Step-by-step explanation:

Hypothesis testing allows to identify a event test. The correct order of the steps of a hypothesis test is given following  

1. Determine the null and alternative hypothesis.

2. Select a sample and compute the z - score for the sample mean.

3. Determine the probability at which you will conclude that the sample outcome is very unlikely.

4. Make a decision about the unknown population.

These steps are performed in the given sequence to test a hypothesis.

The principal tests the hypothesis with a mean of 21.6 hours for the determination of average amount of time spent watching television.

You might be interested in
I will give brainliest answer
snow_tiger [21]

Step-by-step explanation:

inner region

A=πr^2

A=π*6^2

A=π*36cm^2

A=113.09cm^2

shaded region(outer)

A=πr^2

A=π*9^2

A=π*81cm^2

A=254.46cm^2

Area of shaded region=254.46cm^2-113.09cm^2

=141.37cm^2

Mark brianliest if my answer suit your question

5 0
3 years ago
Read 2 more answers
mariah has been hired as a receptionist.She is paid a flat rate of $225 each week and ears an additional $11.25 for every hour t
blsea [12.9K]
675 = 225 + 11.25h <== ur equation
5 0
3 years ago
What should you do if in the REVIEW phase of problem solving, you find the answer doesn't make sense?
N76 [4]

Answer:

I would recheck the answer

Step-by-step explanation:

there is my opinion :)

4 0
3 years ago
Tanya drove 3 1/2 hours and used 1/3 tank of gas. For how long could Tanya drive using​ 1/2 ​tank of gas?
creativ13 [48]
<span>
3 1/2  = 7/2

7/2  hours and used 1/3 tank of gas
</span><span>? hours and used 1/2 tank of gas

1/2 * 7/2
------------
    1/3

= 7/4
-------
  1/3

= 7/4 * 3
= 21/4
= 5 1/4 

answer: 5 1/4 hours </span><span>Tanya could drive using​ 1/2 ​tank of gas</span><span>

</span>
4 0
3 years ago
Smo answer these and show work plz
suter [353]

Answer:

Step-by-step explanation:

1) multiply the three dimension

V = 7 x 2 x 4 = 56 cm^3

2)  find the base area

base area = (9 x 3)/2 = 13,5 km^2

multiply the base area for the height

V = 13,5 x 5 = 67,5 km^3

3) find the trapezoid area

trapezoid area = [(base 1 + base 2) x h]/2 = [(4+6) x 1.7]/2 = 8.5 cm^2

mutiply the trapezoid area for the height that the priam would assume if the base will touch the ground

V = 8.5 x 4 = 34 cm^3

4) find the base area

base area = radius^2 x pi = 2^2 x pi = 12,57 yd^2

multiply the base area for the height

V= 12.57 x 6 = 75.40 yd^3

5) find the base area

base area = 9^2 x pi = 81 x pi = 254.47 ft^2

multiply the base area for the height

V = 254.47 x 5 = 1272.35 ft^3

6)  multiply the three dimensions

V = 12 x 11 x 9 = 1188 yd^3

7) find the trapezoid area

trapezoid area = [(12+6) x 6.3]/2 = [20 x 6,3]/2 = 63 in^2

mutiply the trapezoid area for the height that the priam would assume if the base will touch the ground

V = 63 x 16 = 1008 in^3

8) find the base area

base area = (leg1 x leg 2)/2 = (4 x 3)/2 = 6 m^2

multiply the base area for the height

V = 6 x 9 = 54 m^3

4 0
3 years ago
Read 2 more answers
Other questions:
  • Bruce has a bottle that contains 60% lemon juice and the rest water. The bottle has 1 liter of water. Part A: Write an equation
    14·1 answer
  • 1+1=2+8=13 it is 13 have a good day
    11·2 answers
  • The point-slope form of the equation of the line that passes through (–5, –1) and (10, –7) is y + 7 = -2/5(x – 10). What is the
    14·1 answer
  • The linear equation y = 1/4x tells us that this line is going to be more vertical or horizontal?
    15·1 answer
  • What Is 7+18divided by(6-3)
    7·2 answers
  • The length of an edge of a cube is 5 in. what is the volume of the cube?
    15·1 answer
  • What is the fifth term of the sequence whose first term is 10 and whose common ratio is 1/2?
    14·1 answer
  • Find m/1 and m/2 and it is 130 percent on the other side just look at the pick I can’t explain it
    5·1 answer
  • Pls help i’m not good at this lol
    15·2 answers
  • Evaluate the polynomial 6x - y, for x = -3 and y = 2.<br><br>a) -20<br>b) 4<br>c) -16<br>d) 15​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!