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
jek_recluse [69]
3 years ago
14

The heights in inches of orangutans Are normally distributed with a population standard deviation of 3" and an unknown populatio

n mean if a random sample of 17 orangutans is taken and results in a sample mean of 57" find the error bound of the confidence interval with a 95% confidence level
Mathematics
1 answer:
CaHeK987 [17]3 years ago
7 0

Answer: The 95% confidence interval is approximately (55.57, 58.43)

======================================================

Explanation:

At 95% confidence, the z critical value is about z = 1.960 which you find using a table or a calculator.

The sample size is n = 17

The sample mean is xbar = 57

The population standard deviation is sigma = 3

The lower bound of the confidence interval is

L = xbar - z*sigma/sqrt(n)

L = 57 - 1.960*3/sqrt(17)

L = 55.5738905247863

L = 55.57

The upper bound is

U = xbar + z*sigma/sqrt(n)

U = 57 + 1.960*3/sqrt(17)

U = 58.4261094752137

U = 58.43

Therefore the confidence interval (L, U) turns into (55.57, 58.43) which is approximate.

You might be interested in
The graph of f(x) = 3.2x-3 is shown below. g(x) is a transformation of f(x).
WINSTONCH [101]

Answer:

  C.  g(x) = 3·2^x +2

Step-by-step explanation:

The graph of g(x) appears to be a translation upward of the graph of f(x).

__

To find the equation of g(x), we can add 5 to f(x), since the translation appears to be 5 units. (The y-intercept of f(x) is 0; the y-intercept of g(x) is 5.)

  g(x) = f(x) +5

  g(x) = (3·2^x -3) +5

  g(x) = 3·2^x +2

__

You can also determine the correct choice by looking at the value at x=0:

  A. g(0) = 3 +6 = 9

  B. g(0) = 1 +3 = 4

 C. g(0) = 3 +2 = 5 . . . . matches g(0) on the given graph

  D. g(0) = 3

6 0
2 years ago
It takes about 20 hours to drive from Columbus to Houston which is about 1180 miles. What is the unit rate?
Margaret [11]

Answer:

it would be 59 miles per hour

Step-by-step explanation:

1180/20=59

4 0
2 years ago
Read 2 more answers
Solve for x 6 ( x − 2 ) = 8 ( x − 9 )
valentinak56 [21]

Answer:

x = 30

Step-by-step explanation:

in order to solve for the value of x in the expression 6 ( x − 2 ) = 8 ( x − 9 )

we will first of all open the brackets and then evaluate for the value of x by combining the like terms.

from 6 ( x − 2 ) = 8 ( x − 9 )

6x -12 = 8x -72

combine the like terms

6x - 12 + 72 = 8x

-12 + 72 = 8x -6x

60 = 2x

divide both sides by the coefficient of x which is 2

60/2 = 2x/2

30 = x

x = 30

therefore the value of x in the expression 6 ( x − 2 ) = 8 ( x − 9 ) is equals to 30

4 0
3 years ago
Read 2 more answers
Find the area of the trapezoid?
pshichka [43]

Answer:

Very simple 6th graders

Step-by-step explanation:

7 X 5 = 35 DIVIDE3D BY 2 = 17.5 THAT IS THE TRIANGLE BUT I CAN NOT SEE THE OTHER.

but i will still help

the number on the top needs to be multiplyed by the number on the side and then add it to the 17.5 and that is your answer

3 0
2 years ago
Find the value of x. Then find the measure of each label length.
sweet-ann [11.9K]
Should be somewhere around there either way for 9. the angles are the same because you see the arrows on the parallel lines 8. I'm not quite as sure about

3 0
3 years ago
Other questions:
  • What is the domain of the relation graphed below?
    12·1 answer
  • Geometry math question
    8·2 answers
  • Solve for x, y, and z. Please show all steps.
    15·1 answer
  • The x-intercept of the line x = 3.5 is . the y-intercept of the line y = -6.5
    8·1 answer
  • HELP PLSSS MARKING BRAINLIST!
    8·1 answer
  • Chose the equation that has solutions (5,7) and (8,13)
    14·1 answer
  • write an equation for a function that has a graph with the shape of y=x^2, but upsidedown and shifted right 6 units and up 4 uni
    14·1 answer
  • Help me with this 4 2/7÷1 1/4
    15·1 answer
  • Estimate to compare. Select < or >. Round each number to the nearest whole number to estimate each sum.
    13·1 answer
  • Un círculo con circunferencia igual a 20 tiene un arco con ángulo central igual a 72°.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!