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
lesya [120]
3 years ago
13

A local radio station plays 40 rock-and-roll songs during each 4-hour show. The program director at the station needs to know th

e total amount of airtime for the 40 songs so that time can also be programmed during the show for news and advertisements. The distribution of the lengths of rock-and-roll songs, in minutes, is roughly symmetric with a mean length of 3.9 minutes and a standard deviation of 1.1 minutes.
A: Describe the sampling distribution of the sample mean song lengths for random samples of 40 rock-and-roll songs.

B: if the program manager schedules 80 minutes of new and advertisements for the 4 hour (240-minute) show, only 160 minutes are available for music. Approximately what is the probability that the total amount of time needed to play 40 randomly selected rock-and-roll songs exceeds the available airtime.
Advanced Placement (AP)
1 answer:
jok3333 [9.3K]3 years ago
4 0

Answer:

The  answer is B.

Explanation:

You might be interested in
How does the time period in A Thousand Splendid Suns reflect issues of identity?
PIT_PIT [208]
I hope you all have a good day!!
3 0
1 year ago
What’s that definition of iconography
Lesechka [4]
The definition of iconography is the visual representations and symbols used, or the research or understanding of a piece of art.
4 0
2 years ago
What is 1000000000000000000 divided by 17 +27045
VLD [36.1K]

Answer:

5.88235294E16

Explanation:

7 0
3 years ago
A magnifying glass will create a larger, virtual image because the glass is made of a blank
coldgirl [10]
I believe the answer is...
A magnifying glass will create a larger, virtual image because the glass is made of a convex lens.
4 0
3 years ago
Hydrochlorofluorocarbons (HCFCs) are human-made chemicals that have been used as temporary replacements for chlorofluorocarbons
natta225 [31]

Answer:

c) are greenhouse gases that contribute to climate change

Explanation:

  • The CFCs and the HCFCs are fully and partially hydrogenated carbons and contains carbon and hydrogen and chlorine and fluoride and other volatile substance and being a component of the greenhouses gases like the methane.
  • <u>These contribute to climate change and the greenhouse effects on the earth and this is due to the government have phased put the use of CFCs and though this gas has a short lifespan.</u>
6 0
3 years ago
Other questions:
  • The purpose of most of the amendments to the United States Constitution is to
    13·1 answer
  • How many career clusters have been identified by the U.S. Department of education
    8·2 answers
  • Explain the difference between objectives and goals? and give and explain of each
    5·1 answer
  • Why isn´t New Years Eve and Christmas Eve considered an actual holiday?
    10·1 answer
  • (20 points) HELP
    6·2 answers
  • Which of the following best describes the defensive driving term “space”?
    7·1 answer
  • Social factors that may contribute to unemployment in south africa amongst the youth
    14·1 answer
  • The scientist sets hydroelectric energy as a sustainable energy source for the simulated human population. What are two factors
    11·1 answer
  • Burt and ernie are both considering taking out a 150,000 mortgage.burt's credit card score is 592,while ernies credit score is 7
    9·1 answer
  • What type of tax funds city programs
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!