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
Harman [31]
3 years ago
14

1. A bag contains rubber bands with lengths that are normally distributed with a mean of 6 cm of length, and a standard deviatio

n of 1.5 cm. What percentage of rubber bands can be expected to be shorter than 3 cm?
Mathematics
1 answer:
romanna [79]3 years ago
4 0
Roughly 1.7 percent of the bands are shorter than 3cm. We calculate the z score of the data point in standard distribution. By definition of z score, we use score minus mean divided by standard deviation. z=(3-6)/1.5=-2. A z score of -2 corresponds to approximately 1.7%, in other words, roughly 1.7 percent of data is less than 3cm.
You might be interested in
A supply company manufactures copy machines. The unit cost C (the cost in dollars to make each copy machine) depends on the numb
ArbitrLikvidat [17]

Answer:

  $9327

Step-by-step explanation:

Apparently, the cost function is supposed to be ...

  C(x) = 0.4x^2 -112x +17167

This can be rewritten to vertex form as ...

  C(x) = 0.4(x^2 -280) +17167

  C(x) = 0.4(x -140)^2 +17167 -0.4(19600)

  C(x) = 0.4(x -140)^2 +9327

The vertex of the cost function is ...

  (x, C(x)) = (140, 9327)

The minimum unit cost is $9327.

_____

<em>Comment on the question</em>

You found the number of units that result in minimum cost (140 units), but you have to evaluate C(140) to find the minimum unit cost.

8 0
2 years ago
X = 1, 2, 3 , 4 ,5
Vera_Pavlovna [14]
X goes by 1s

And y goes by 3s
3 0
3 years ago
Read 2 more answers
What is 12t-8t combind
kogti [31]

Answer:

Simplifying

12t + -8t = 0

Combine like terms: 12t + -8t = 4t

4t = 0

Solving

4t = 0

Solving for variable 't'.

Move all terms containing t to the left, all other terms to the right.

Divide each side by '4'.

t = 0

Simplifying

t = 0

Step-by-step explanation:

4 0
3 years ago
Write a real-world problem that could be represented by the following inequality. 70 + 5x &lt; 30 + 15x
kondaur [170]

Justin wants to paint his room. So he put together some quotations from two different painters. The first painter's total charge was based on the number of hours (denoted as x) worked was modeled as f( x ) = 70 + 5 x, while that of the second painter was g( x ) = 30 + 15 x. Justin knows that it will take more than 4 hours to decorate the house so he was certain to go with the first painter whose cost is low-priced when the number of hours is above 4 hours.

4 0
3 years ago
How is 5.67 written in standard form
zvonat [6]
5.00+0.67+0.07 that's it I believe
4 0
3 years ago
Read 2 more answers
Other questions:
  • Vicky jogged 3 1/4 miles in 1/2 hour. What was her average rate of speed in miles per hour
    8·1 answer
  • Laurence started with 30 pieces of candy and gave away x pieces. Beatriz started with 70 pieces of candy and gave away five time
    8·1 answer
  • A packing company is doing an inventory of boxes. Their most popular box is display below: 2ft,(3x-5)ft,(2x-1)ft you can use the
    6·1 answer
  • The point (5,4) lies on a circle. What is the length of the radius of
    13·1 answer
  • What scale factor was used in dilation
    11·1 answer
  • 2/3 if a book read and 4/5 of a book read. Who read more and how much mire
    7·1 answer
  • Please help me i need an answer
    6·1 answer
  • Maria uses 8 flavor packets to make punch for a party. Each packet is mixed with 500 milliliters of water. How many liters of pu
    8·1 answer
  • Solve for x. Thank you
    12·2 answers
  • Solve -7g - 2 = - 30. Show your steps.
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!