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
Svetlanka [38]
3 years ago
15

SOMEONE PLEASE HELP ME

Mathematics
1 answer:
Nadya [2.5K]3 years ago
7 0
Use desmos to find your answer hope that helps
You might be interested in
A business school has a goal that the average number of years of work experience of its MBA applicants is more than three years.
gizmo_the_mogwai [7]

Answer:

z=\frac{3.1-3}{\frac{2.449}{\sqrt{47}}}=0.280    

p_v =P(z>0.280)=0.390  

If we compare the p value and the significance level assumed \alpha=0.01 we see that p_v>\alpha so we can conclude that we have enough evidence to fail reject the null hypothesis, so we can't conclude that the height of men actually its NOT significant higher than 0.3 at 1% of signficance.  

Step-by-step explanation:

Data given and notation  

\bar X=3.1 represent the sample mean

\sigma=\sqrt{6} represent the sample standard deviation for the sample

n=47 sample size  

\mu_o =3 represent the value that we want to test

\alpha represent the significance level for the hypothesis test.  

t 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 mean is higher than 3, the system of hypothesis would be:  

Null hypothesis:\mu \leq 3  

Alternative hypothesis:\mu > 3  

If we analyze the size for the sample is > 30 and we know the population deviation so is better apply a z test to compare the actual mean to the reference value, and the statistic is given by:  

z=\frac{\bar X-\mu_o}{\frac{\sigma}{\sqrt{n}}}  (1)  

z-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".  

Calculate the statistic

We can replace in formula (1) the info given like this:  

z=\frac{3.1-3}{\frac{2.449}{\sqrt{47}}}=0.280    

P-value

Since is a one side test the p value would be:  

p_v =P(z>0.280)=0.390  

Conclusion  

If we compare the p value and the significance level assumed \alpha=0.01 we see that p_v>\alpha so we can conclude that we have enough evidence to fail reject the null hypothesis, so we can't conclude that the height of men actually its NOT significant higher than 0.3 at 1% of signficance.  

3 0
3 years ago
4 questions. Please help.
Vladimir [108]
Dont u think their should be more points for 4 hard questions
4 0
3 years ago
A restless point moved from point 12 to the left at the speed of 5/6 units per minute. Where will it be in 10.2 minutes? PLLLS H
mrs_skeptik [129]

Answer:

3.5

Step-by-step explanation:

4 0
3 years ago
Can someone please help me with these questions.
Juli2301 [7.4K]

Answer:

Question 1 - 81.74 Pound sterling

Question 2 - 20.28 Pound sterling

Question 3 - 21.72 United States Dollar

Question 4 - 429.38 New Zealand Dollar

Question 5 - 451.28 Euro

Question 6 - 2,936.88 Chinese Yuan

(That's all I got.)

5 0
3 years ago
What is the difference between a ray and line segment line segment is a part of a line bound by multiple points along the line;
koban [17]

A line segment is a part of a line bound by two points; a ray is a line with one endpoint that extends to infinity in one direction. is the difference between a ray and line segment.

Option: C.

<u>Step-by-step explanation:</u>

A line is a set of multiple points that extends from one point to its opposite direction without any end. Ray and Line segments are the two parts that can occur in a line.

A ray is a line with an endpoint in which the line can be extended from that point to infinity in a direction. A line segment also another part line and it consists of two points. Moreover, The line is bounded between those points.

8 0
3 years ago
Other questions:
  • Which value is needed in the expression below to create a perfect square trinomial?
    6·2 answers
  • Which disjunction is always true for any real number x?
    16·1 answer
  • 2.<br> Which number is equivalent to 15%<br> of 80?<br> A. 1.2<br> B. 5.3<br> C. 12<br> D. 53
    15·2 answers
  • How many boxes can a machine pack in 25 min if the machine packs boxes at a rate of 50 boxes per minute? Enter your answers into
    14·2 answers
  • How do you do this question?
    14·1 answer
  • How many 3/4s are in 2 ?
    5·1 answer
  • HELP ME OUT PLEASE
    11·1 answer
  • Meredith needs $399 to buy a tablet computer. She wants
    10·1 answer
  • Find the domain of the rational function.<br> f(x)= x+9/ x^2+ 16 ?
    15·1 answer
  • Grade 7 Checkpoint 4- Part 1<br> What is the value of x?<br> Enter your answer in the box.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!