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
USPshnik [31]
3 years ago
10

A population has a mean of 125 and a standard deviation of 16. A sample of 64 observations will be taken. The probability that t

he sample mean will be between 122.4 and 126.1 is
Mathematics
1 answer:
Ket [755]3 years ago
3 0

Answer:

0.61204

Step-by-step explanation:

μ = 125 ; σ = 16 ; n = 64

Probability that mean will be between 122.4 and 126.1

Z = (x - μ) / σ/sqrt(n)

x = 122.4

Z = (122.4 - 125) ÷ 16/sqrt(64)

Z = - 2.6 ÷ 2 = - 1.3

P(Z < - 1.3) = 0.0968

x = 126.1

Z = (126.1 - 125) ÷ 16/sqrt(64)

Z = 1.1 ÷ 2 = 0.55

P(Z < 0.55) = 0.70884

P(Z < 0.55) - P(Z < - 1.3)

0.70884 - 0.0968

= 0.61204

You might be interested in
What is the value of 10 to the 3rd power
Novosadov [1.4K]
10 x 10 x 10 = 1000 your welcome
3 0
4 years ago
Read 2 more answers
What is the absolute value of -25?
NISA [10]

Answer:

25

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Tyrone invested money for 3 years at 5% interest. If the interest paid was $60, how much money was invested? What was the total
yan [13]

Answer:

He invested $1200 and had a balance of $1260 after 3 years.

3 0
3 years ago
What is the value of i4?
natima [27]

Answer:

  1

Step-by-step explanation:

You want to know the value of i^4.

<h3>Powers of i</h3>

The fourth power of i, √(-1), can be found the same way the value of any fourth power can be found: carry out the multiplication.

  i^4 = i·i·i·i = -1·i·i = -i·i = -(-1) = 1

The fourth power of i is 1.

__

<em>Additional comment</em>

As you can see from the evaluation process, ...

  i¹ = i

  i² = -1 . . . . . definition of i

  i³ = -i

  i⁴ = 1

The sequence repeats for higher powers.

8 0
2 years ago
I will give brainliest. <br> What is the hypotenuse and how do I get it?
Ivan

Step-by-step explanation:

by Pythagoras theorem:

perpendicular² + base²= hypotenuse²

(1/√2)²+ (1/√3)² = H²

1/2+1/3= H²

5/6 = H²

√(5/6 )= H

√5/√6 = H

plz mark my answer as brainlist plzzzz.

hope this will be helpful to you

4 0
3 years ago
Other questions:
  • Please help apex ansers
    12·1 answer
  • Round 47,397 to the nearest ten
    15·2 answers
  • The answer and how did they get the answer lease help?
    5·1 answer
  • Which type of evidence uses information gained through research? A. empirical B. statistical C. anecdotal D. analogical
    11·1 answer
  • Which of the following best describes the equation below? (Will mark as brainliest if it’s right (: )
    8·2 answers
  • If one batch needs 3/4 cups of oil. and she want to make 5 batches. how much would she need?
    15·2 answers
  • Which of the following statements is false? (5 points)
    11·2 answers
  • Helppp please I don’t get it
    9·1 answer
  • Helpppppppppppppppppppppppppppppppppppppppppp
    10·2 answers
  • Hegarty maths angles
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!