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
Alex_Xolod [135]
3 years ago
15

You measure 47 backpacks' weights, and find they have a mean weight of 79 ounces. Assume the population standard deviation is 13

.1 ounces. Based on this, what is the maximal margin of error associated with a 90% confidence interval for the true population mean backpack weight.
Give your answer as a decimal, to two places
Mathematics
1 answer:
ki77a [65]3 years ago
8 0

Answer:

3.14

Step-by-step explanation:

Given that:

Mean weight (m) = 79 ounces

Population standard deviation (s) = 13.1

Sample size = 47

Maximal margin of error associated with 90% confidence interval.

The margin of error is given by:

Zcritical * (standard deviation / sqrt(sample size)

Z critical at 90% confidence interval = 1.645

Hence,

Zcritical * (standard deviation / sqrt(sample size)

1.645 * 13.1 / sqrt(47)

1.645 * (13.1 / 6.8556546)

1.645 * 1.9108313

Hence, the margin of error is :

3.1433174885

= 3.14

You might be interested in
Which function below is the inverse of f(x) = x2 − 36? x squared over 36 ą6square root of x 1 over quantity x squared minus 36 ą
Hitman42 [59]
The answer would be <span><span>f<span>−1</span></span><span>(x)</span></span>=<span>√<span>36+x</span></span>,<span>−<span>√<span>36+<span>x. I didn't know it in word form :(</span></span></span></span>
4 0
3 years ago
Whats the least common denominator of 9, 13, and 20
aliya0001 [1]

Answer:

13 = 13  

20 = 2^2 • 5  

9 = 32

Prime Factor   Number 13   Number 20   Number 9    L.C.M  

   2                         0                        2                     0               2

   3                          0                        0                     2               2                                                  

   5                          0                         1                     0                  1  

 

   13                         1                         0                    0                   1

6 0
2 years ago
Parker is testing 2 different types of ant killer in his yard. He purchases Brand A and Brand B from the home improvement store.
NNADVOKAT [17]

Answer:

 

He did not wait as long between each treatment of ant killer.

Step-by-step explanation:

He did one on monday and another on saturday then checked them on sunday

8 0
3 years ago
A circle has a radius of 7/4 units and is centered at <br> (−2.5,−4.4)
lana66690 [7]
Are you asking for the expression?

If so, you plug into the format (x - h)² + (y - k)² = r² where (h, k) is the center and r is the radius.

(x + 2.5)² + (y + 4.4)² = (7/4)²

Simplify to get your equation and answer:

(x + 2.5)² + (y + 4.4)² = 49/16
6 0
3 years ago
Read 2 more answers
Can I get help with this problem please?
Rashid [163]

Answer:

B

Step-by-step explanation:

To find the y- intercept let x = 0

From the table for f(x)

When x = 0 → f(x) = - 4

That is the y- intercept = - 4

Given

g(x) = 3 (2)^{x}

let x = 0 , then

g(0) = 3 (2)^{0} [ 2^{0} = 1 ]

       = 3 × 1

       = 3

That is the y- intercept = 3

Thus the y- intercept of g(x) is greater → B

8 0
3 years ago
Other questions:
  • Factor the sum of terms as a product of the GCF and a sum
    5·1 answer
  • The top of a ladder rests at a height of 15 feet against the side of a house. If the base of the ladder is 6 feet from the house
    12·2 answers
  • 3x -y= -1 + -3x + 3y= 27
    13·1 answer
  • What was life like in Hargigo before people planted the mangrove trees?
    6·1 answer
  • N•(17+X)=34x-r<br> Solve for X
    7·1 answer
  • Helppp plsss nowwwwwww
    6·1 answer
  • The company that owns the telescope gives a discount of $8 off the rental fee for every rental hour after the first two hours. T
    8·1 answer
  • Can someone pls help me
    14·1 answer
  • WILL GIVE BRAINLEST 100Pts!
    8·2 answers
  • 1 3/5 gallons of gasoline were used to drive 25 1/2 miles. How many miles per gallons did the car get?​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!