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
riadik2000 [5.3K]
3 years ago
14

Find the difference.

Mathematics
1 answer:
PSYCHO15rus [73]3 years ago
8 0
D how much randall occured in january?
You might be interested in
Circle 1: center (-9, -5) and radius 6
34kurt
The answer is 5/2 I just took the test!!! Hope I helped :)
8 0
3 years ago
Two random samples are taken, with each group asked if they support a particular candidate. A summary of the sample sizes and pr
Minchanka [31]

Answer:

And we got \alpha/2 =0.01 so then the value for \alpha=0.02 and then the confidence level is given by: Conf=1-0.02=0.98[/tex[ or 98%Step-by-step explanation:A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".  The margin of error is the range of values below and above the sample statistic in a confidence interval.  Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".  [tex]p_1 represent the real population proportion for 1

\hat p_1 =0.768 represent the estimated proportion for 1

n_1=92 is the sample size required for 1

p_2 represent the real population proportion for 2

\hat p_2 =0.646 represent the estimated proportion for 2

n_2=95 is the sample size required for 2

z represent the critical value for the margin of error  

The population proportion have the following distribution  

p \sim N(p,\sqrt{\frac{p(1-p)}{n}})  

The confidence interval for the difference of two proportions would be given by this formula  

(\hat p_1 -\hat p_2) \pm z_{\alpha/2} \sqrt{\frac{\hat p_1(1-\hat p_1)}{n_1} +\frac{\hat p_2 (1-\hat p_2)}{n_2}}  

For this case we have the confidence interval given by: (-0.0313,0.2753). From this we can find the margin of erro on this way:

ME= \frac{0.2753-(-0.0313)}{2}=0.1533

And we know that the margin of erro is given by:

ME=z_{\alpha/2} \sqrt{\frac{\hat p_1(1-\hat p_1)}{n_1} +\frac{\hat p_2 (1-\hat p_2)}{n_2}}

We have all the values except the value for z_{\alpha/2}

So we can find it like this:

0.1533=z_{\alpha/2} \sqrt{\frac{0.768(1-0.768)}{92} +\frac{0.646 (1-0.646)}{95}}

And solving for z_{\alpha/2} we got:

z_{\alpha/2}=2.326

And we can find the value for \alpha/2 with the following excel code:

"=1-NORM.DIST(2.326,0,1,TRUE)"

And we got \alpha/2 =0.01 so then the value for \alpha=0.02 and then the confidence level is given by: Conf=1-0.02=0.98 or 98%

7 0
3 years ago
Please help with question 22b! Thanks :)
NNADVOKAT [17]
6.5 liters per 100 km travelled. 30% of 5 is 1.5, so adding this to the original amount results in 6.5
8 0
3 years ago
Read 2 more answers
Simplest way to multi-step equations...
Bess [88]

Answer: calculator boi

Step-by-step explanation:

4 0
3 years ago
can someone help me with this i have autism and my parents aren't home I need some help with this pls will give brainly
svetoff [14.1K]
I can barely see the majority of the questions
i cant do all but to multiply fractions, you just multiply the numerator and the denominator together
so 3 2/3 x 6
change 3 2/3 to an improper fraction
9/3 x 6/1 = 27/3 which is 9/1 reduced
10 x 1 2/3 is 10/1 x 5/3 = 50/3
3 0
3 years ago
Read 2 more answers
Other questions:
  • suppose a triangle has two sides of length 3 and 4 and that the angle between these two sides is 60. what is the length of the t
    13·1 answer
  • PLS HELP ASAP LIKE PLSSSSS
    11·2 answers
  • Write an expression with four terms. Include at least one term with an exponent, one term with a coefficient of 5, one term with
    10·1 answer
  • If r = x, y, z and r0 = x0, y0, z0 , describe the set of all points (x, y, z) such that |r − r0| = 5.
    10·2 answers
  • What is the rule (0,0),(1,4),(2,16),(3,36),(4,64)
    14·2 answers
  • The graph shows the distance cars A and B travel.
    10·2 answers
  • 5+4^2÷2 simplified with work shown​
    15·1 answer
  • Mr. Gardner is making 6 treat bags.He has 185 chocolate covered raisins to share evenly among the treat bags.
    14·1 answer
  • HELP ME PLEASE (50 points) picture below HELP PLEASE
    8·2 answers
  • Find the value of x. Round to the<br> nearest tenth.<br> 40<br> X<br> 7<br> x = [?]
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!