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Leviafan [203]
3 years ago
15

A busy traffic intersection in a city was experiencing an average of 20 accidents per week. The council decided to try to reduce

the number of accidents by placing a stop sign at the intersection. In this situation, what is:
a. the null hypothesis
b. the alternative hypothesis
Mathematics
1 answer:
inessss [21]3 years ago
7 0

Answer:

Null hypothesis; H0: μ1 = μ2

Alternative hypothesis; Ha: μ1 > μ2

Step-by-step explanation:

We are told that the telraffic was experiencing an average of 20 accidents per week.

Thus, μ = 20

We are told that the council decided to try to reduce the number of accidents.

Thus defining the hypothesis, we have;

Null hypothesis; H0: μ1 = μ2

Alternative hypothesis; Ha: μ1 > μ2

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Marina CMI [18]
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7 0
2 years ago
A motorboat moves across a lake. It begins at 50km from shore after 9 minutes it is 14 km from shore. What’s it’s distance from
agasfer [191]

Answer:

List all of the solutions.

50 k m =

9 m i n u t e s =

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Step-by-step explanation:

4 0
2 years ago
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Help please! I need to write 4y =-3x + 12 in standard form, find the y-intercept of the previous equation, as an ordered pair, a
damaskus [11]

Answer:

-3x+4y=12\\y-intercept: (0,3)\\x-intercept: (-4,0)

Step-by-step explanation:

The standard form of a linear equation is ax+by=c, where a , b, and c are constants in the equation.

Based on the equation you have provided, the standard form would be -3x+4y=12, where a=-3, b=4, c=12.

To find the y-intercept, set x=0.

-3(0)+4y=12\\0+4y=12\\4y=12\\y=\frac{12}{4} =3

Therefore, the y-intercept is (0,3).

Do the same thing for the x-intercept, but this time with y=0.

-3x+4(0)=12\\-3x+0=12\\-3x=12\\x=\frac{12}{-3} =-4

Therefore, the x-intercept is (-4,0).

5 0
3 years ago
How to solve this problem im not getting a good answer
kow [346]
Well, you have to simplify the bottom part to be able to answer it as a whole number. Hope this helps. 
7 0
3 years ago
Read 2 more answers
What are two different ways of factoring –3x – 9? Select all that apply. A. –3(x + 3) B. 3(x + 3) C. 3(–x – 3) D. –3(x – 3)
I am Lyosha [343]
The awnser is A) and C)


Hope it helps :)
8 0
3 years ago
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