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
EastWind [94]
3 years ago
13

For which sample size (n) and sample proportion (p) can a normal curve be

Mathematics
1 answer:
Nonamiya [84]3 years ago
7 0

Answer:

Option c.

Step-by-step explanation:

Using the normal curve to approximate a sampling distribution:

For a sample size n and a proportion n, the normal curve can be used if:

np \geq 10 and n(1-p) \geq 10

Option a:

np = 35*0.8 = 28 > 10

n(1-p) = 35*0.2 = 7 < 10

So option a cannot be used.

Option b:

np = 65*0.9 = 58.5 > 10

n(1-p) = 65*0.1 = 6.5 < 10

So option b cannot be used.

Option c:

np = 65*0.8 = 52 > 10

n(1-p) = 65*0.2 = 13 > 10

So option c can be used, and is the answer

Option d:

np = 35*0.9 = 31.5 > 10

n(1-p) = 35*0.1 = 3.5 < 10

So option d cannot be used.

The answer is given by option c.

You might be interested in
Use determinants to find out if the matrix is invertible.
wariber [46]

Answer:

The matrix is not invertible.

Step-by-step explanation:

We are given the following matrix in the question:

A =\left[\begin{array}{ccc}-5&0&1\\-1&3&2\\0&10&6\end{array}\right]

Condition for invertible matrix:

A matrix is invertible if and only if the the determinant is non-zero.

We can find the determinant of the matrix as:

|A| = -5[(3)(6)-(2)(10)]-0[(-1)(6)-(2)(0)] + 1[(-1)(10)-(3)(0)]\\|A| = -5(18-20)+(-10)\\|A| = 10-10\\|A| = 0

Since the determinant of the given matrix is zero, the given matrix is not invertible.

5 0
3 years ago
Which of the following is a pair of vertical angles? <br><br> EXAMPLE: 1 and 4 , 1 and 5
tresset_1 [31]
5 and 7
1 and 3
4 and 2
8 and 65
6 0
3 years ago
Read 2 more answers
A museum groundskeepers is creating a semicircle statuary garden with a diameter of 30 feet. The fencing cost 9.25 per linear fo
malfutka [58]
It is equal to 277.5 

5 0
3 years ago
The absolute value of a number is its _____ from 0.
Lena [83]

The absolute value of a number is its distance from 0.


5 0
3 years ago
We select a random sample of 25 observations from a normally distributed population with an unknown population variance. the com
MrMuchimi
Sorry, I do not know the answer to your question
4 0
3 years ago
Other questions:
  • Solve the differential equation. y' + 5xey = 0.
    6·1 answer
  • a conical tent is made of canvas that has a base that is 34 feet across and a slant height of 12 feet to the nearest whole unit
    11·1 answer
  • Gia researches online that her car is worth $3,000. She hopes to sell it for 85% of that value, but she wants to get at least 70
    9·2 answers
  • Does anyone know the passwords for the flvs 6th grade 04.08 module four test part one and two
    10·2 answers
  • Please ANSWER! DOING A TEST!
    5·1 answer
  • Determine if the following triangles are similar. If yes, choose the correct postulate; if no,
    11·2 answers
  • Pls help me answer this​
    8·1 answer
  • 11. The length of a rectangle is 2 more than the width. The perimeter is 32. Find the
    15·1 answer
  • What is the velocity of the plane that travels 3000km in 5 hours?
    5·2 answers
  • Find the volume of these solid<br><br>20mm<br>3.7mm<br>41mm​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!