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
shutvik [7]
3 years ago
9

En una muestra de 50 restaurantes de comida rápida, la venta media fue de $3.000, y la desviación estándar, $200. El intervalo d

e confianza del 95% es
Mathematics
1 answer:
Step2247 [10]3 years ago
8 0

Respuesta:

(2945.411; 3054.589)

Explicación paso a paso:

Dado ;

Tamaño de la muestra, n = 50

Media, xbar = 3000

Desviación estándar, s = 200

Nivel de confianza, Zcrítico al 95% = 1,96

El intervalo de confianza se define como:

Xbar ± margen de error

Margen de error = Zcrítico * s / sqrt (n)

Margen de error = 1,96 * 200 / sqrt (50)

Margen de error = 54.589

Límite inferior = (3000 - 54.589) = 2945.411

Límite superior = (3000 + 54.589) = 3054.589

(2945.411; 3054.589)

You might be interested in
Write a number that has a 6 in the thousandths place, a 5 in the hundredths place, and a 0 in the tenths place. Then write a num
GaryK [48]

Answer:

i am not sure bi it may be 2

8 0
3 years ago
Read 2 more answers
HELP ASAP!!!<br><br>Simplify the expression. -5+i/2i
natulia [17]
I belive this would equal -11/2.
hope this helps!
4 0
4 years ago
Read 2 more answers
The length of a quarter 0.955 inches. <br> Round the length of the nearest tenth of an inch.
katen-ka-za [31]

Answer: 1 Inch

Step-by-step explanation: 0.9 rounded up with 0.05 = 1.

6 0
3 years ago
A bag contains 7 red marbles, 8 blue marbles and 4 green marbles. If three marbles
labwork [276]

Answer:

answers is 19cscscsvss

6 0
3 years ago
Please help me find the distance between the two polar coordinates <br> thank you!
Ratling [72]

Answer:

⅜ is the distance

Hope you found this answer very useful

7 0
2 years ago
Other questions:
  • There's this problem that says 45.67 times 32.58
    11·1 answer
  • If x2 = 30, what is the value of x?
    6·1 answer
  • What is the coefficient of the y-term in the expression 4x+5xy–2y
    10·2 answers
  • At 12:00 p.m. , Jane leaves her house and drives north to the beach. She arrives at 1:30 p.m. Also leaving at 12:00 p.m., her br
    6·2 answers
  • 26. What is the conclusion of the following conditional statement?
    14·2 answers
  • I NEED ANSWER ASAP PLZZZZZ
    15·2 answers
  • 18. Solve the quadratic equation by using the graph.
    10·1 answer
  • Is of 12 equal to 9?<br>no​
    11·1 answer
  • The fox population in a certain region has an annual growth rate of 5 percent per year. It is estimated that
    5·1 answer
  • To measure the height of a tree, Alma walked 125 ft from the tree and
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!