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
nikdorinn [45]
3 years ago
6

I need help some questions and good morning :)

Mathematics
1 answer:
777dan777 [17]3 years ago
5 0
The first one on the very top is the correct answer
You might be interested in
Look at image please help me
crimeas [40]
The answer is y^3/x^3
3 0
3 years ago
3. A recent news article stated that only 17% of college students between the ages of 18 to 24 years old voted in the last presi
dangina [55]

Answer:

3.67% probability that from a random sample of 500 college students from a local university, at least 20% will vote in the next presidential election

Step-by-step explanation:

I am going to use the binomial approximation to the normal to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

E(X) = np

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

Normal probability distribution

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

When we are approximating a binomial distribution to a normal one, we have that \mu = E(X), \sigma = \sqrt{V(X)}.

In this problem, we have that:

p = 0.17, n = 500.

So

\mu = E(X) = np = 500*0.17 = 85

\sigma = \sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{500*0.17*0.83} = 8.4

Assuming the voting rate stays the same, what is the probability that from a random sample of 500 college students from a local university, at least 20% will vote in the next presidential election

This is 1 subtracted by the pvalue of Z when X = 500*0.2 = 100. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{100 - 85}{8.4}

Z = 1.79

Z = 1.79 has a pvalue of 0.9633

1 - 0.9633 = 0.0367

3.67% probability that from a random sample of 500 college students from a local university, at least 20% will vote in the next presidential election

5 0
3 years ago
Determine which function has the greatest rate of change as x approaches infinity.
Elan Coil [88]

Answer:

A) f(x) = 2^x - 10

Step-by-step explanation:

Exponential functions are always greater in the long run.

3 0
3 years ago
Help me answer, please
Illusion [34]

Answer:

B = 35° , a = 55.256, b = 32.401

Step-by-step explanation:

To get B we know that triangle has sum of ° 180, for solving a and b we will use law of sine where a/sinA = b/sinB = c/sinC

6 0
2 years ago
if an office of 36 typist uses 12 dozen envelopes per day how many dozen envelope would an office of 125 typists of use?
Pani-rosa [81]
Assuming the envelope consumption is proportional to the number of typists, you have ...
  (12 dz)/36 = x/125
  125*(12 dz)/36 = x = 41 2/3

An office of 125 typists would use 41 2/3 dozen envelopes per day.
6 0
3 years ago
Other questions:
  • What is the difference between a hot call and a cold call?
    6·2 answers
  • Express the diameter of a circle as a function of its radius
    7·1 answer
  • What properties does a trapezoid have in common with a rhombus?
    12·2 answers
  • If a polynomial function f(x) has roots 0, 4, and 3+ the square root of 11, what must also be a root of f(x)
    7·2 answers
  • Find the difference 18-15
    14·2 answers
  • Find the 13th term in the sequence -6 -4 -2 0
    12·2 answers
  • I NEED HELP ASSSSSAAAAPPPP
    12·2 answers
  • 6-4x=6x-8+2 <br>cual es la respuesta de esta ecuación ?​
    11·2 answers
  • 1 basic algebreh im sloe hlp me
    10·2 answers
  • What is the distance between point A(−1, 3) and point B(−8, 3) ?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!