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
eimsori [14]
3 years ago
9

Two people can swing on a trapeze at the same time as long as

Mathematics
2 answers:
PtichkaEL [24]3 years ago
5 0
Yes there weight add up to 490
pychu [463]3 years ago
4 0

Answer:

Yes!

Step-by-step explanation:

Joe’s weight with Jake’s weight is 490, which is less than 500, so yes!

You might be interested in
Can you please help
Dmitry [639]

Answer is in the file below

tinyurl.com/wpazsebu

4 0
3 years ago
A study was recently conducted at a major university to estimate the difference in the proportion of business school graduates w
sveta [45]

Answer:

(0.1875-0.274) - 1.96 \sqrt{\frac{0.1875(1-0.1875)}{400} +\frac{0.274(1-0.274)}{500}}=-0.1412  

(0.1875-0.274) + 1.96 \sqrt{\frac{0.1875(1-0.1875)}{400} +\frac{0.274(1-0.274)}{500}}=-0.0318  

And the 95% confidence interval would be given (-0.1412;-0.0318).  

We are confident at 95% that the difference between the two proportions is between -0.1412 \leq p_A -p_B \leq -0.0318

Step-by-step explanation:

Previous concepts

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".  

p_A represent the real population proportion for business  

\hat p_A =\frac{75}{400}=0.1875 represent the estimated proportion for Business

n_A=400 is the sample size required for Business

p_B represent the real population proportion for non Business

\hat p_B =\frac{137}{500}=0.274 represent the estimated proportion for non Business

n_B=500 is the sample size required for non Business

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}})  

Solution to the problem

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

(\hat p_A -\hat p_B) \pm z_{\alpha/2} \sqrt{\frac{\hat p_A(1-\hat p_A)}{n_A} +\frac{\hat p_B (1-\hat p_B)}{n_B}}  

For the 95% confidence interval the value of \alpha=1-0.95=0.05 and \alpha/2=0.025, with that value we can find the quantile required for the interval in the normal standard distribution.  

z_{\alpha/2}=1.96  

And replacing into the confidence interval formula we got:  

(0.1875-0.274) - 1.96 \sqrt{\frac{0.1875(1-0.1875)}{400} +\frac{0.274(1-0.274)}{500}}=-0.1412  

(0.1875-0.274) + 1.96 \sqrt{\frac{0.1875(1-0.1875)}{400} +\frac{0.274(1-0.274)}{500}}=-0.0318  

And the 95% confidence interval would be given (-0.1412;-0.0318).  

We are confident at 95% that the difference between the two proportions is between -0.1412 \leq p_A -p_B \leq -0.0318

7 0
3 years ago
Aiden has $15.00 on his copy card. Each time he uses the card to make a photocopy, $0.06 is deducted from his card. Aiden wants
melamori03 [73]
15 - 0.06X=5
would be 
X=166 2/3
4 0
3 years ago
Read 2 more answers
A recent drug survey showed an increase in use of drugs and alcohol among local high school students as compared to the national
prisoha [69]

Answer:

The answer is "0.586"

Step-by-step explanation:

Please find the solution to the given question:  

z= \frac{0.65-0.61}{\sqrt{\frac{0.65 \times 0.35}{100}+\frac{0.61 \times 0.39}{100}}}

  = \frac{0.04}{\sqrt{\frac{0.2275}{100}+\frac{0.2379}{100}}}\\\\= \frac{0.04}{\sqrt{0.002275+0.002379}}\\\\= \frac{0.04}{\sqrt{0.004654}}\\\\= \frac{0.04}{0.0682202316}\\\\=0.586336327\\\\

8 0
3 years ago
The directrix of a parabola is y = 4. Its focus is (2,6).
puteri [66]

Answer:

Equation in picturee

Step-by-step explanation:

8 0
3 years ago
Other questions:
  • Each of two trapezoidal prisms has a volume of 120 cubic centimeters. the prisms have no dimensions in common. give possible dim
    12·1 answer
  • Find both unite rates. They paid $96.88 for 8 pizzas
    11·1 answer
  • C(x) = (x^1/7)(x + 8)
    8·1 answer
  • Determine which of the following numbers could not be​ probabilities, and​ why? Select all that apply. A. The number 110​% could
    9·1 answer
  • 15. A mosquito flaps its wings 800 vibrations per second. What is the frequency of the buzz?
    15·1 answer
  • . Use π ≈ 3.14 to estimate the circumference of the circle.
    15·2 answers
  • A small plane is flying northeast at a speed of 200 mph. A wind blows due west at 28 mph. Find the resultant speed and direction
    14·1 answer
  • What is the range of the reciprocal parent function?
    14·2 answers
  • Write an equivalent expression in simplest form. 3+2(5x)-7
    9·1 answer
  • PLEASE HURRY Which of the following is NOT a solution in the solution region.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!