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
irina [24]
3 years ago
13

HURRY WILL MARK BRAINLIEST

Mathematics
2 answers:
jek_recluse [69]3 years ago
5 0

Answer:

People shopping at a local pet store

Grace [21]3 years ago
4 0

Answer:

A

Step-by-step explanation:

I just did the quiz

You might be interested in
A scientist uses a submarine to study ocean life.
Olegator [25]

BRO I DONT KNOW ANSWER EAST OR WEAST MY ANSWER IS BEST

3 0
3 years ago
If two lemons cost 15 cents, how many can be bought for 60 cents?
babymother [125]
4 lemons approximately

8 0
3 years ago
Read 2 more answers
When the angle of elevation to the sun is 52", a tree casts a shadow that is 13 feet long. What is
shepuryov [24]

Answer:

72

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
3x-4=5<br><br> Solve the equation above
SVEN [57.7K]

Answer:

The answer is x = 3

Explanation step by step

8 0
3 years ago
In the book Essentials of Marketing Research, William R. Dillon, Thomas J. Madden, and Neil H. Firtle discuss a research proposa
MakcuM [25]

Answer:

Null hypothesis:p_{1} = p_{2}  

Alternative hypothesis:p_{1} \neq p_{2}  

z=\frac{0.179-0.15}{\sqrt{0.17(1-0.17)(\frac{1}{140}+\frac{1}{60})}}=0.500  

p_v =2*P(Z>0.500)=0.617  

So the p value is a very low value and using any significance level for example \alpha=0.05, 0,1,0.15 always p_v>\alpha so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and we can say the two proportions NOT differs significantly.  

Step-by-step explanation:

Data given and notation  

X_{1}=25 represent the number of homeowners who would buy the security system

X_{2}=9 represent the number of renters who would buy the security system

n_{1}=140 sample 1

n_{2}=60 sample 2

p_{1}=\frac{25}{140}=0.179 represent the proportion of homeowners who would buy the security system

p_{2}=\frac{9}{60}= 0.15 represent the proportion of renters who would buy the security system

z would represent the statistic (variable of interest)  

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

Concepts and formulas to use  

We need to conduct a hypothesis in order to check if the two proportions differs , the system of hypothesis would be:  

Null hypothesis:p_{1} = p_{2}  

Alternative hypothesis:p_{1} \neq p_{2}  

We need to apply a z test to compare proportions, and the statistic is given by:  

z=\frac{p_{1}-p_{2}}{\sqrt{\hat p (1-\hat p)(\frac{1}{n_{1}}+\frac{1}{n_{2}})}}   (1)  

Where \hat p=\frac{X_{1}+X_{2}}{n_{1}+n_{2}}=\frac{25+9}{140+60}=0.17  

Calculate the statistic  

Replacing in formula (1) the values obtained we got this:  

z=\frac{0.179-0.15}{\sqrt{0.17(1-0.17)(\frac{1}{140}+\frac{1}{60})}}=0.500  

Statistical decision

For this case we don't have a significance level provided \alpha, but we can calculate the p value for this test.    

Since is a two sided test the p value would be:  

p_v =2*P(Z>0.500)=0.617  

So the p value is a very low value and using any significance level for example \alpha=0.05, 0,1,0.15 always p_v>\alpha so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and we can say the two proportions NOT differs significantly.  

6 0
3 years ago
Other questions:
  • Solve x and y please need it for tomorrow
    15·2 answers
  • One reading an Antarctic research station showed that the temperature was -35 degrees Celsius what is this temperature in degree
    13·1 answer
  • Simplify the expression where possible (x^3 y^2) ^4
    8·1 answer
  • 1) Find the value of two numbers if their sum is 12 and their difference is 4.
    15·1 answer
  • (y − 3)^2 = 4(x − 5), (6, 1). Find an equation of the tangent line to the graph at the given point.
    5·1 answer
  • Could someone help me please
    13·1 answer
  • Jessica wants to make pillows for her couch. She has 6 yards of fabric. Each pillow use 2/3 of a yard each. How many pillows can
    8·1 answer
  • Can any1 do my hw pls​
    11·1 answer
  • M∠1 = _°<br><br> •70<br><br> •50<br><br> •90
    13·2 answers
  • What inequality does this number line show?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!