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
Butoxors [25]
3 years ago
12

Can someone check my work if it’s right or not?

Mathematics
2 answers:
andrey2020 [161]3 years ago
4 0

Answer:

Its correct good job

Step-by-step explanation:

AleksandrR [38]3 years ago
3 0
Answer: looks good to me, its correct.
You might be interested in
Suppose in the University of Manitoba, 40% of the students live in apartments. If 600 students are randomly selected, then the a
just olya [345]

Answer:

P(200\leq X\leq 400)=P(\frac{200-240}{12}\leq \frac{X-\mu}{\sigma}\leq \frac{400-240}{12})=P(-3.33\leq Z \leq 13.33)

=P(Z

So then the correct answer would be:

B) .9996

Step-by-step explanation:

The exact way to solve this problem is using the binomial distribution, assuming that our random variable of interest is "number of students living in apartments" represented by X and X \sim Bin(n=600, p =0.4)

And we want this probability:

P(200 \leq X \leq 400) [tex]In order to find this probability we can use the foloowing excel code:"=BINOM.DIST(400,600,0.4,TRUE)-BINOM.DIST(199,600,0.4,TRUE)"And we got:[tex] P(200 \leq X \leq 400) =0.999675[tex]But for this case the problem says that we need to approximate, so then we can use the normal approximation to the normal distribution. We need to check the conditions in order to use the normal approximation.
[tex]np=600*0.4=240\geq 10

n(1-p)=600*(1-0.4)=360 \geq 10

So we see that we satisfy the conditions and then we can apply the approximation.

If we appply the approximation the new mean and standard deviation are:

E(X)=np=600*0.4=240

\sigma=\sqrt{np(1-p)}=\sqrt{600*0.4(1-0.4)}=12

And then X \sim N (\mu = 240, \sigma= 12)

And we are interested on the following probability:

P(200\leq X\leq 400)=P(\frac{200-240}{12}\leq \frac{X-\mu}{\sigma}\leq \frac{400-240}{12})=P(-3.33\leq Z \leq 13.33)

=P(Z

So then the correct answer would be:

B) .9996

6 0
3 years ago
Insert each of the following numbers between two consecutive multiples of 5: 13 37 48 61 93
DedPeter [7]
10 (13) 15
35 (37) 40
45 (48) 50
60 (61) 65
90 (93) 95
7 0
2 years ago
Write an ex expression for the product of 11 and w
klemol [59]

Answer:

11w

Step-by-step explanation:

product means multiply

6 0
3 years ago
A square prism measuring 6 km along each<br> edge of the base and 5 km tall. Find area
adelina 88 [10]
The area would be 30. it would be 6x5
4 0
3 years ago
Moya picked 3 dozen apples she wents to share her apes in equal groups. show how many different way can she do this
lys-0071 [83]

Answer:

Groups of 12, Groups of 4, Groups of 6, Groups of 18

Step-by-step explanation:

12 x 3 = 36

36 splits evenly into 12, 4, 6, and 18 therefore that is your answer.

5 0
2 years ago
Other questions:
  • Ben's $1,000.00 bond earns 7.5% in annual interest. What is the annual interest?
    9·1 answer
  • Can someone help me please im very confused and please use step by step please<br><br> -2/3x+1&lt;7
    5·1 answer
  • Evaluate |-5| <br><br> A) -5 <br><br> B) 5
    10·2 answers
  • What is the answer to 5.09x15
    11·1 answer
  • What is the approximate length of arc s on the
    15·2 answers
  • What is the value of the lower quartile?<br><br> 2<br> 2.5<br> 3<br> 6
    11·1 answer
  • 10. A teacher gave a test to three classes that contained 27, 25, and 23 students. A total of 18 students scored an A on the tes
    15·1 answer
  • How can you subtract similar fraction,dissimilar fraction and mixed number?​
    14·2 answers
  • HELP ASAP PLS <br> It’s the following
    11·1 answer
  • Given f(x)=5x-3, find f(-3)
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!