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
FromTheMoon [43]
3 years ago
12

8x -4y>-28 6y>12x-36

Mathematics
1 answer:
padilas [110]3 years ago
8 0

Answer:

no

Step-by-step explanation:

You might be interested in
A medical researcher wondered if there is a significant difference between the mean birth weight of boy and girl babies. Random
Yuliya22 [10]

Answer:

b) independent samples t-test

t=\frac{(5.92 -5.74)-(0)}{\sqrt{\frac{1.88^2}{5}}+\frac{1.81^2}{5}}=0.154  

p_v =2*P(t_{8}>0.154) =0.881  

So with the p value obtained and using the significance level given \alpha=0.05 we have p_v>\alpha so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and we can said that at 5% of significance the mean of the group 1 (boys) is NOT significantly different than the mean for the group 2 (Girls).  

Step-by-step explanation:

The system of hypothesis on this case are:  

Null hypothesis: \mu_1 = \mu_2  

Alternative hypothesis: \mu_1 \neq \mu_2  

Or equivalently:  

Null hypothesis: \mu_1 - \mu_2 = 0  

Alternative hypothesis: \mu_1 -\mu_2\neq 0  

Our notation on this case :  

n_1 =5 represent the sample size for group 1  

n_2 =5 represent the sample size for group 2  

We can calculate the mean and deviation for eaach group with the following formulas:

\bar X= \frac{\sum_{i=1}^n X_i}{n}

s = \sqrt{\frac{\sum_{i=1}^n (X_i -\bar X)^2}{n-1}}

\bar X_1 =5.92 represent the sample mean for the group 1  

\bar X_2 =5.74 represent the sample mean for the group 2  

s_1=1.88 represent the sample standard deviation for group 1  

s_2=1.81 represent the sample standard deviation for group 2  

If we see the alternative hypothesis we see that we are conducting a bilateral test and with independnet samples t test.

b) independent samples t-test

The statistic is given by this formula:  

t=\frac{(\bar X_1 -\bar X_2)-(\mu_{1}-\mu_2)}{\sqrt{\frac{s^2_1}{n_1}}+\frac{S^2_2}{n_2}}  

And now we can calculate the statistic:  

t=\frac{(5.92 -5.74)-(0)}{\sqrt{\frac{1.88^2}{5}}+\frac{1.81^2}{5}}=0.154  

The degrees of freedom are given by:  

df=5+5-2=8

And now we can calculate the p value using the altenative hypothesis:  

p_v =2*P(t_{8}>0.154) =0.881  

So with the p value obtained and using the significance level given \alpha=0.05 we have p_v>\alpha so we can conclude that we have enough evidence to FAIL to reject the null hypothesis, and we can said that at 5% of significance the mean of the group 1 (boys) is NOT significantly different than the mean for the group 2 (Girls).  

7 0
3 years ago
What is 6 divided by 46.8
sashaice [31]
The rounded answer of this question is 0.128 or 0.13
8 0
2 years ago
Read 2 more answers
Need help with this asap
ipn [44]

Answer:

SSS

Step-by-step explanation:

All sides with the same amount of lines are congruent

5 0
2 years ago
can someone help me?? What is the solution to the linear equation? d – 10 – 2d + 7 = 8 + d – 10 – 3d d = –5 d = –1 d = 1 d = 5
erik [133]

Answer:

No

Step-by-step explanation:

No

6 0
3 years ago
Read 2 more answers
Round 151.09 to the nearest whole
3241004551 [841]
It is rounded down to 151.
3 0
3 years ago
Read 2 more answers
Other questions:
  • In△XYZ , XY¯¯¯¯¯¯=7in , YZ¯¯¯¯¯=5in , and XZ¯¯¯¯¯=4in . This triangle is reflected across the x-axis to result in △X'Y'Z' . Whic
    5·1 answer
  • Please help and explain how you got the answer I'm really bad at these
    10·2 answers
  • If c(x) = 5/(x - 2) d(x) = x + 3 , what is the domain of (co)(x) ?
    13·1 answer
  • How many times does the minute hand move around the clock face in one day?
    11·2 answers
  • Dan bought 20 bunches of seedless green grapes for $48.00 . How many bunches can buy if she has $12.00?
    5·1 answer
  • What is the volume of a hollow ball whose other radius is 200m and inner radius of 100m? What is the mass if it is iron?
    12·1 answer
  • What is the square root of -1
    10·2 answers
  • Chandler tells Aubrey that the decimal value of − 1 17is not a repeating decimal. Should Aubrey believe him? Explain.
    5·1 answer
  • The sum of renting bowling shoes for $6 and $3 per game
    13·2 answers
  • Why is apr an important tool for consumers
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!