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
astra-53 [7]
3 years ago
5

The amount people who pay for electric service varies quite a bit, but the mean monthly fee is $168 and the standard deviation i

s $34. The distribution is not Normal. Many people pay about $90 in rural areas of the country and about $150 in urban areas of the country, but some pay much more. A sample survey is designed to ask a simple random sample of 1,200 people how much they pay for electric services. Let xbar be the mean amount paid. Part A: What are the mean and standard deviation of the sample distribution of xbar? Show your work and justify your reasoning. (4 points) Part B: What is the shape of the sampling distribution of xbar? Justify your answer. (2 points) Part C: What is the probability that the average electric service paid by the sample of electric service customers will exceed $170? Show your work. (4 points)

Mathematics
1 answer:
dybincka [34]3 years ago
4 0

Answer:

Part A)

Mean = $168

standard deviation = 0.98

Part B)

1200

Part C)

0.0207

Step-by-step explanation:

Find the given attachments for solution

You might be interested in
Solve for x, given the equation VX-5 + 7 = 11.
Alisiya [41]
The answer is 9/v or 9 over v
6 0
3 years ago
Read 2 more answers
Solve using substitution<br>x-2y =2<br>3x+4y=3​
lorasvet [3.4K]

Answer:

7/5, y = -3/10

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Eric is adding water to a 60
Archy [21]

Answer:

After 2.5 minutes the pool will have 27 gallons of water.

Step-by-step explanation:

The pool has already 12 gallons of water and Eric wants to fill it to at least 27 gallons.

The water is flowing at a rate of 6 gallons per minute.

Let, after t minutes the pool will have at least 27 gallons of water.

Therefore, we can write the equation as  

27 = 12 + 6t

⇒ 6t = 15

⇒ t = 2.5 minutes.

Therefore, after 2.5 minutes the pool will have 27 gallons of water. (Answer)

8 0
3 years ago
Evaluate the expression when y = 4. 5 y 8
Elden [556K]
I suppose you mean 5y^8.
When y = 4, we have,
5(4)^8 = 5 x 65,536 = 327,680
7 0
3 years ago
Which of the following represents the zeros of f(x) = 6x3 − 31x2 + 4x + 5?
kotegsom [21]

If any doubt leave a comment

8 0
2 years ago
Other questions:
  • What is 3,920,000,000,000 in scientific notation?
    8·2 answers
  • Which set of three angles could represent the interior angles of a triangle?
    7·1 answer
  • PLEASE HELP!!!! I am so close to finishing im just very confused on this question any help is appreciated math is very hard for
    10·1 answer
  • What is the area of the rectangle? rectangle on a coordinate plane. rectangle has vertices at begin ordered pair 1 comma 3 end o
    14·1 answer
  • A store owner buys cell phones for 40.00 and marks up the price by 25%. explain how to find the price at which she sells the cel
    12·1 answer
  • Help meeeeeeee pleasee
    8·1 answer
  • Plz help hurry it’s on the pic plz
    15·1 answer
  • 6. Function P represents the number of people in the gym on a Monday as a function of hours since the gym
    12·2 answers
  • On a coordinate plane, 2 lines are shown. Line P Q has points (negative 5, 3) and (5, 1). Line R S has points (negative 4, negat
    15·1 answer
  • Select the correct answer.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!