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
Ber [7]
3 years ago
11

In recent years the mean number of miles driven per year by residents of a particular state was 11,568. A researcher wishes to t

est, at the 5% level of significance, whether the mean is different now. In a random sample of 62 drivers, the mean and sample standard deviation of the number of miles driven last year were 10,822 and 1,741, respectively. The rejection region for the relevant test is:
Mathematics
1 answer:
aleksandrvk [35]3 years ago
8 0

Answer:

The degrees of freedom are given by:

df =n-1= 62 -1=61

And we want to find a critical value on the t distribution with 61 degrees of freedom who accumulates 0.025 of the area on each tail and the critical value would be t_{\alpha/2}= \pm 2.00

And the rejection region would be |t_{calc}| >2.00

Step-by-step explanation:

Data given and notation  

\bar X=10822 represent the sample mean  

s=1741 represent the sample standard deviation

n=62 sample size  

\mu_o =11568 represent the value that we want to test  

\alpha=0.05 represent the significance level for the hypothesis test.  

z would represent the statistic (variable of interest)  

p_v represent the p value for the test (variable of interest)  

State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the true mean differs from 11568, the system of hypothesis would be:  

Null hypothesis:\mu =11568  

Alternative hypothesis:\mu \neq 11568  

The degrees of freedom are given by:

df =n-1= 62 -1=61

And we want to find a critical value on the t distribution with 61 degrees of freedom who accumulates 0.025 of the area on each tail and the critical value would be t_{\alpha/2}= \pm 2.00

And the rejection region would be |t_{calc}| >2.00

You might be interested in
In quadrilateral ABCD, angle A is 75 degrees, angle B is 115 degrees, and angle D is 90 degrees. What is the measure of angle C?
galina1969 [7]

Answer:

80

Step-by-step explanation:

A quadrilateral measured 360. if you do not know that you can multiply 360 by 2 because there are 2 triangles in a quadrilateral. Then you subtract 360 by 75,115, and 90. And you will get 80 degrees

7 0
2 years ago
Write an inequality for the following statement. A is greater than 7
yarga [219]

Answer: A>7

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
an iron cube measures 10cm by 10cm by10cm. what is its volume? if the same iron cube weights 7.9 kg, what is its density in g/cm
7nadin3 [17]
Is there an image you can attach?
7 0
3 years ago
Analyze the diagram below and complete the instructions that follow. Find the area of QRS.
11Alexandr11 [23.1K]

<u>Answer-</u>

<em>The area of QRS is </em><em>238.7</em><em> sq units.</em>

<u>Solution-</u>

According to properties of supplementary angles,

m\angle R+124=180\\\\m\angle Q+132=180

So,

\Rightarrow m\angle R=180-124=56,\ m\angle Q=180-132=48

As the sum of measurement of all the angles in a triangle is 180, so

\Rightarrow m\angle S+m\angle R+m\angle Q=180

\Rightarrow m\angle S=180-m\angle R-m\angle Q

\Rightarrow m\angle S=180-56-48=76

Then the area of the triangle will be,

\text{Area}=\dfrac{1}{2}qr\sin S

=\dfrac{1}{2}\times 21\times 23.43\times \sin 76

=238.7\text{sq.units}

8 0
3 years ago
Write down the exact value of cos 60 degrees
Misha Larkins [42]

Answer:

.5

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
Other questions:
  • A corner shelf has a radius of 10.5 inches and represents 1/4 of a circle as shown.enter the area of the shelf in square inches.
    15·1 answer
  • What is the equation of the line passing through (2,3) and (5,6)
    5·2 answers
  • -2/3 a =12 give Brainly
    5·1 answer
  • Please help!!!!!!!!!!!
    9·1 answer
  • What is x and what are the steps I take to find X?
    11·1 answer
  • Whats the median of (20, 15, 14, 16, 17, 12, 20, 22)
    11·1 answer
  • Timothy bought concrete mix for several projects. He used 3.5 bags of concrete mix for a new set of stairs and 2.25 bags of conc
    5·2 answers
  • How many learners can enrol if there are 12 teachers and a ratio of teachers to learners is 30:1
    12·1 answer
  • Which of these points lies on the graph of the equation x − 12 = y?
    11·1 answer
  • At a certain restaurant, the distribution of wait times between ordering a meal and receiving the meal has mean 11.4 minutes and
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!