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
ipn [44]
3 years ago
7

What is the two ratios equivalent to 3 to 4

Mathematics
1 answer:
Contact [7]3 years ago
8 0

Answer: 8 : 6

Step-by-step explanation:

You might be interested in
The sales of a grocery store had an average of $8,000 per day. The store introduced several advertising campaigns in order to in
oksano4ka [1.4K]

Answer:

Null hypothesis:\mu \leq 8000  

Alternative hypothesis:\mu > 8000  

z=\frac{8300-8000}{\frac{1200}{\sqrt{64}}}=2  

p_v =P(Z>2)=0.0228  

Step-by-step explanation:

1) Data given and notation  

\bar X=8300 represent the sample mean  

\sigma=1200 represent the population standard deviation  

n=64 sample size  

\mu_o =800 represent the value that we want to test  

\alpha 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)  

2) State the null and alternative hypotheses.  

We need to conduct a hypothesis in order to check if the mean is higher than 8000, the system of hypothesis are :  

Null hypothesis:\mu \leq 8000  

Alternative hypothesis:\mu > 8000  

Since we know the population deviation, 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".  

3) Calculate the statistic  

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

z=\frac{8300-8000}{\frac{1200}{\sqrt{64}}}=2  

4) P-value  

Since is a one-side upper test the p value would given by:  

p_v =P(Z>2)=0.0228  

5) Conclusion  

If we compare the p value and the significance level assumed, for example \alpha=0.05 we see that p_v so we can conclude that we have enough evidence to reject the null hypothesis, so we can conclude that the mean is significantly higher than $8000.  

4 0
3 years ago
Which ratio expresses the scale used to create this drawing?<br> 1 square=10 yards
BlackZzzverrR [31]

Answer:

option B

Step-by-step explanation:

option B

gdyfudjfjghfhguftduc

4 0
3 years ago
From: Sam To: You
Whitepunk [10]

Answer:

Should I tell Ash?

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
The midpoint of AB is M(2, -1). If the coordinates of A are (1,6), what are the
VashaNatasha [74]

Answer:

work is attached and shown

5 0
3 years ago
How many​ one-to-one correspondences are there between two sets with 5 elements​ each?
Fittoniya [83]
1st element can be matched with 5
2nd element can be matched with 4
3rd element can be matched with 3
etc.
Total number of correspondences = 5*4*3*2*1 = 120
7 0
3 years ago
Other questions:
  • What is the common denominator between 3/8 and 1/2
    13·1 answer
  • Select the correct product. (j + 7)(k - 5)
    8·2 answers
  • give the coordinates (-6,5) and (4,-8) find the distance between the two points. Round your answer to the nearest tenth
    12·1 answer
  • The function f(t)= 15,000(0.86)' models the value , in dollars, of a used car t years after it is purchased. What is the value o
    14·1 answer
  • 307,407 rouned to the nereist thousandth
    9·1 answer
  • Help and tell me why
    7·1 answer
  • Evaluate a-b if a=10 and b=-7​
    11·1 answer
  • At Karl's Exact Ice-Cream, Karl fills each cone completely and tops it off with a scoop on top. Approximately how much ice-cream
    13·1 answer
  • Someone please help:( I will really appreciate it
    14·1 answer
  • Can someone explain this math problem to me so I can show my son how to solve it please ​
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!