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
Alex
3 years ago
13

A survey concluded that 60% of cars going through the Lomonosov street encounters traffic jam. After installing a new traffic li

ghts, a random sample of 2500 cars was found to contain 1462 cars encountered traffic jam. Have the new installed traffic lights had any effect? State your conclusion with 0.05 level of significance
Mathematics
2 answers:
Mkey [24]3 years ago
6 0

Yes, the new traffic lights have had an effect, as only 58.48% of surveyed cars had encountered a traffic jam, compared to 60% before the installation of the traffic lights.

erastovalidia [21]3 years ago
3 0

Answer:

Close encounters. AI can help city officials manage traffic by counting how many moving vehicles travel down a road and identifying close encounters between vehicles and pedestrians. Courtesy TACC.

Step-by-step explanation:

You might be interested in
A test contains eight true/false questions. Assuming you attempt each question, in how many different ways could you answer the
Umnica [9.8K]

multiplication , addition, subtraction, division

5 0
3 years ago
Jamie takes at random a counter from the bag and records the colour. Red : blue : green = 1:3:7 Jamie does this a number of time
Sonbull [250]

Answer: There are 249 times Jamie takes a counter from the bag.

Explanation:

Since we have given that

Ratio of colour of red to blue to green is 1:3:7.

Number of blue counters = 68

Let the total number of times Jamie does from the bag be x.

So, According to question,

\frac{3}{11}\times x=68\\\\x=\frac{11}{3}\times 68\\\\x=249.33\\\\=249\ approx.

Hence, there are 249 times Jamie takes a counter from the bag.

8 0
3 years ago
Is (4,-2) (5,-3), (6,-2), (7,-3) a function??? need answers quick pls(ᗒᗣᗕ)՞
erastova [34]

Answer:

7.-3

Step-by-step explanation:

yes.

7 0
2 years ago
Ten years ago, only 20% of the u.s. population consisted of people more than 65 years old. a researcher plans to use a sample of
Strike441 [17]
Hello person i don't know 
5 0
2 years ago
Read 2 more answers
State if the two triangles are congruent. If they are state how you know.<br> Help me
deff fn [24]

Answer:

i think its the last option.

Step-by-step explanation:

its not the first one because they it can be proved using AAS (but that option isnt available)

You can't prove it with SSS or ASA without more info

AAA doesn't exist

theirfore it must be the last option.

3 0
2 years ago
Read 2 more answers
Other questions:
  • What is the number sentence using addition. ...the answer is 34
    15·2 answers
  • At summer camp, some people collected pine cones.
    9·2 answers
  • Really need help. Answer following questions
    12·1 answer
  • 729 to the power of 1 over 3
    6·1 answer
  • Find f(-3) if f(x) = x^2.
    13·1 answer
  • Solve for x.
    9·1 answer
  • JK=4x+7 and KL=3x+14 find JL
    9·1 answer
  • The local newspaper has letters to the editor from 60 people. If this number represents 5% of all of
    12·2 answers
  • I am stuck on this one.
    10·2 answers
  • Question Which of the following will justify that EFGH is a parallelogram?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!