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
svetlana [45]
3 years ago
7

I need help with these problems #3,4,5, and 6

Mathematics
2 answers:
kvv77 [185]3 years ago
7 0
Sorry, but the picture is too blurry. Can you write them down?
Rainbow [258]3 years ago
6 0
It's too blurry. Try zooming in a bit more.
You might be interested in
Eddie believes that if he flips a coin 650 times, it will land heads up exactly 325 times. What would you tell Eddie about his p
DedPeter [7]
Eddie is correct about his prediction. A coin has two sides, one head, one tail, so there is a 50% chance that it will land heads every time Eddie flips the coin. I would tell Eddie that his prediction is reasonable and mathematically correct.
3 0
3 years ago
The Town of Hertfordshire clerk knows that 23% of dogs in the town have completed emotional support training. Hertfordshire plan
Nataly_w [17]

Answer:

95.64% probability that under 30% of the dogs are emotional support trained

Step-by-step explanation:

For each dog, there are only two possible outcomes. Either they have completed emotional support training, or they have not. So we use the binomial probability distribution to solve this problem.

However, we are working with samples that are considerably big. So i am going to aproximate this binomial distribution to the normal.

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:

\mu = E(X) = np = 100*0.23 = 23

\sigma = \sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{100*0.23*0.77} = 4.21

What is the probability that under 30% of the dogs are emotional support trained?

30% of 100 is 0.3*100 = 30

So this is the pvalue of Z when X = 30.

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

Z = \frac{30 - 23}{4.1}

Z = 1.71

Z = 1.71 has a pvalue of 0.9564.

So there is a 95.64% probability that under 30% of the dogs are emotional support trained

5 0
3 years ago
Greatest to least 1/3 1/2 3/4
schepotkina [342]
The answer will be 3/4, 1/2, and 1/3.
The bigger the fraction the smaller it is.
So 3/4 would be first .
The smaller the fraction the bigger it is.
So 1/3 would be last.
So that leaves you with 1/2 so that one would be in the middle of the set.
So the answer would be...:3/4, 1/2, and 1/3.
Hope that helped.
4 0
3 years ago
If x=3 what is 3x+7x(8x 5)<br> ALSO does anyone wanna ch.at?
koban [17]

Answer:  

56x6+3x

Step-by-step explanation:

3x+7x(8x5)

3x+56x6

7 0
3 years ago
Read 2 more answers
1. Solve the given quadratic equations by extracting square roots. Provide an extra sheet for your solutions.​
kirill [66]

An

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • Solve for h.<br> h + 1 = 10<br> h.<br> Submit
    11·2 answers
  • A builder set up a wooden frame in which to pour concrete for a foundation to a house. The length of the wooden frame is 24 feet
    5·2 answers
  • May somebody help me please .
    14·1 answer
  • What is the area of 4x3x1
    9·2 answers
  • Please help asap!!!!!! will give brainliest!!!!
    5·1 answer
  • Find x<br><br>(a+3)² - 25 = 0​
    13·2 answers
  • Help please ASAP. Correct answer will get brainly
    5·2 answers
  • FIND THE THE<br> MISSING ANGLE:<br> 56°<br> 82°<br> Х
    5·2 answers
  • 8=x-17 answer the question
    8·2 answers
  • Twix bars cost $1.29.each. If you buy 10 bars, how much<br> change will you receive from $20?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!