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
algol13
2 years ago
10

Có 30 đềthi trong đó có 10 đềkhó, 20 đềtrung bình. Tìm xác suất để:a)Một Học sinh bắt một đềgặp được đềtrung bình.b)Một Học sinh

bắt hai đề, được ít nhất một đềtrung bình
Mathematics
1 answer:
sergeinik [125]2 years ago
7 0

Answer:

ehfsxuefoenircuducrusxnrim

You might be interested in
If p = .8 and n = 50, then we can conclude that the sampling distribution of pˆ is approximately a normal distribution
FrozenT [24]

Answer:

Yes we can conclude.

Step-by-step explanation:

The sampling distribution of \hat{p} can be approximated as a Normal Distribution only if:

np and nq are both equal to or greater than 10. i.e.

  • np ≥ 10
  • nq ≥ 10

Both of these conditions must be met in order to approximate the sampling distribution of \hat{p} as Normal Distribution.

From the given data:

n = 50

p = 0.80

q = 1 - p = 1 - 0.80 = 0.20

np = 50(0.80) = 40

nq = 50(0.20) = 10

This  means the conditions that np and nq must be equal to or greater than 10 is being satisfied. So, we can conclude that the sampling distribution of pˆ is approximately a normal distribution

6 0
3 years ago
Plsss help ASAP I DONT have timeeeee
vitfil [10]

Answer:

It will still be a frame

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Angles H and F are corresponding angles<br> True or False?
lutik1710 [3]
True! they are corresponding angles.
5 0
2 years ago
Read 2 more answers
Name an inscribed angle
Vladimir79 [104]

Answer:

BHF

Step-by-step explanation:

Definition of inscribed

6 0
3 years ago
Solve. 2(2z – 4) = 4​
Oxana [17]

Answer:

z = 3

Step-by-step explanation:

1) Divide both sides by 2.

2z - 4 =  \frac{4}{2}

2) Simplify 4/2 to 2.

2z - 4 = 2

3) Add 4 to both sides.

2z = 2 + 4

4) Simplify 2 + 4 to 6.

2z = 6

5) Divide both sides by 2.

z =  \frac{6}{2}

6) Simplify 6/2 to 3.

z = 3

<em><u>therefor</u></em><em><u>,</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>answer</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>z</u></em><em><u> </u></em><em><u>=</u></em><em><u> </u></em><em><u>3</u></em><em><u>.</u></em>

4 0
2 years ago
Other questions:
  • Divide.
    15·1 answer
  • Need help asap will upvote Which statement about the ordered pairs (3, −8)(3, −8) and (4, 4)(4, 4) is true for the equation 3x−y
    5·2 answers
  • How to write as equation, the product of 7 and a number
    12·2 answers
  • The probability density function of the time to failure of an electronic component in a copier (in hours) is f(x) = (e^-x/1076)/
    8·1 answer
  • Which of these is most likely a pair of independent and dependent variables?
    5·1 answer
  • 23 x 46 = blank × 23 <br>find the missing number help please ​
    8·2 answers
  • Which expression would be easier to simplify if you used the commutative property to change the order of the numbers?
    7·1 answer
  • Pls help number 1 - 4
    10·2 answers
  • Given g(x) = 3x + 14 , find x if g(x) = 20
    7·1 answer
  • Question 4(Multiple Choice Worth 4 points)
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!