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
Nuetrik [128]
3 years ago
10

What does A= reply quickly​

Mathematics
1 answer:
hoa [83]3 years ago
8 0

Answer:

a=14

Step-by-step explanation:

cross multiply using the butterfly method

7a=98

then divide by 7

You might be interested in
Compare 6.52 & 6.520
LiRa [457]
They are the same because if you add a zero it doesnt change it
4 0
3 years ago
Read 2 more answers
I need help please please
xxTIMURxx [149]

Answer:

reflection then transition

Step-by-step explanation:

because ummm for it to get to one it is reflected then to get to 3 it is transitioned

8 0
2 years ago
Read 2 more answers
Solve for 7/2x+7/9x=−17+2/56
kati45 [8]

Answer:

7/2x+7/9x-(-17+25/6)=0

4 0
2 years ago
983 * 0 is I don't get plz help me.
Marina CMI [18]
It I see 0 because anything times 0 is 0
That's why
8 0
3 years ago
Read 2 more answers
Country Financial, a financial services company, uses surveys of adults age and older to determine if personal financial fitness
Yakvenalex [24]

Complete Question

Country financials, a financial services company, uses surveys of adults age 18 and older to determine if personal financial fitness is changing over time. In February 2012, a sample of 1000 adults showed 410 indicating that their financial security was more that fair. In Feb 2010, a sample of 900 adults showed 315 indicating that their financial security was more than fair.

a

State the hypotheses that can be used to test for a significant difference between the population proportions for the two years.

b

What is the sample proportion indicating that their  financial security was more that fair in 2012?In 2010?

c

Conduct the hypothesis test and compute the p-value.At a .05 level of significance what is your conclusion?

Answer:

a

The null hypothesis is  H_o :  p_1 = p_2

The  alternative hypothesis is   H_a :  p_1  \ne  p_2

b

in 2012  \r  p_1  =0.41

in 2010  \r  p_2  =0.35  

c

The  p-value  is  p-value = 0.0072

The conclusion is

There is  sufficient evidence to conclude that the proportion of those indicating that  financial security is more fair in Feb 2010 is different from the proportion of  those indicating that financial security is more fair in Feb 2012.

Step-by-step explanation:

From the question we are told that

   The  sample size in 2012 is  n_1  =  1000

    The  number that indicated that their finance was more than fail is  k  =  410  

     The  sample  size in 2010  is  n_2  =  900

   The  number that indicated that their finance was more than fail is  u  =  315

     The  level of significance is  \alpha  =  0.05[/ex]The null hypothesis is  [tex]H_o :  p_1 = p_2

The  alternative hypothesis is   H_a :  p_1  \ne  p_2

Generally the sample proportion for  2012 is mathematically represented as

     \r  p_1  =  \frac{k}{n_1}

=>   \r  p_1  =  \frac{410}{1000}

=>   \r  p_1  =0.41

Generally the sample proportion for  2010 is mathematically represented as

      \r  p_2  =  \frac{u}{n_2}

=>   \r  p_2  =  \frac{315}{900}

=>   \r  p_2  =0.35    

Generally the pooled sample proportion is mathematically represented as

      \r p =  \frac{k + u }{n_1 + n_2}

=>     \r p =  \frac{410 + 315 }{1000+ 900}

=>      \r p =  0.3816

Generally the test statistics is mathematically represented as

     z =  \frac{( \r p_1 - \r p_2 ) - 0}{\sqrt{\r p (1 - \r p ) ( \frac{1}{n_1} +\frac{1}{n_2} )}  }

 z =  \frac{( 0.41 -0.35 ) - 0}{\sqrt{0.3816 (1 - 0.3816 ) ( \frac{1}{1000} +\frac{1}{900} )}  }    

 

 z =  \frac{( 0.41 -0.35 ) - 0}{\sqrt{0.3816 (1 - 0.3816 ) ( \frac{1}{1000} +\frac{1}{900} )}  }

   z  =  2.688

Generally the p- value  is mathematically represented as  

      p-value = 2 P(Z >2.688  )

From the z -table  

      P(Z > 2.688) = 0.0036

So  

      p-value = 2 *0.0036

        p-value = 0.0072

So from the p-value  obtained we see that p-value  <  \alpha so we reject the null hypothesis

Thus there is  sufficient evidence to conclude that the proportion of financial security is more fair in Feb 2010 is different from the proportion of financial security is more fair in Feb 2012.

5 0
3 years ago
Other questions:
  • George was reading a mystery story. He read 42 pages in one hour. At this rate how many pages can he read in 40 minutes?
    7·1 answer
  • -0.5(d - 1.5) = 2.5<br> What is d
    9·1 answer
  • I need help pleaseeee!!!!! I don’t understand
    15·1 answer
  • The demon, khan academy, is haunting me. Please excoricse this math demon for me for a great payment of 5 stars, thanks, and a b
    8·1 answer
  • How many matches are needed to form figure number 9 and 17? explain​
    7·1 answer
  • I need help with 40 and 39!!!
    9·2 answers
  • The sum of a number and nine is fifteen<br><br> Write an equation to represent the sentence
    9·1 answer
  • A wire makes a 70 degrees angle with the ground and is attached to the top of a 50 ft. antenna. How long is the wire?
    12·1 answer
  • HELPPPPP ASAAAAP!!!!!!!
    13·1 answer
  • What is the slope-intercept form of the equation of the line containing the points (−2, 4) and (6, 0)?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!