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
zavuch27 [327]
3 years ago
7

It is known that 10% of the items produced by a certain machine end up having a flaw. If we select 7 items from the production l

ine, a) What is the probability that at least one of them has a flaw? Part b) What is the probability that exactly three of them has a flaw?
Mathematics
1 answer:
denpristay [2]3 years ago
6 0

Step-by-step explanation:

p = 0.1, q = 0.9, n = 7

a) Use complementary probability.

P(at least 1) = 1 − P(0)

P(at least 1) = 1 − (0.9)⁷

P(at least 1) = 0.522

b) Use binomial probability.

P = nCr pʳ qⁿ⁻ʳ

P(3) = ₇C₃ (0.1)³ (0.9)⁴

P(3) = 0.023

You might be interested in
A civil engineer is mapping the overhead clearance of his family’s property on a coordinate grid. The ground is represented by t
statuscvo [17]

The distance from the base of the tree to the tallest would be 14.21 cm

<h3>We have the following data points in this question</h3>

X1 = 8 feet

y1 = 16 feet

x2 = 11 feet

y2 = 9 feet

To proceed with the solution we have to

We have to solve for the shorter tree

\sqrt{(y2 -y1)^2 + (x2-x1)^2} \\\\= \sqrt{9-0^2 + 11-0^2}

<em>= </em>9² + 11²

= √81 +121

= 14.21

<h3>For the taller tree we would have</h3>

√8² + 16²

= √64 +256

= 17.89

Read more on distance here:

brainly.com/question/2854969

#SPJ1

7 0
2 years ago
Determine whether the ordered pair (3,2) is a solution to 5x-3y=9 fastttt pleaseeee
Cerrena [4.2K]

Answer:

YES

Step-by-step explanation:

just replace x=3, y=2

5.3 - 3.2 = 15 - 6 = 9

so it is a solution

4 0
2 years ago
Please someone help me please??!!!​
mojhsa [17]

Answer:

how should I know?

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Which unit rate is the lowest price per ounce? Choice A: 15 ounces of chocolate chips for $2.49 Choice B: 20 ounces of chocolate
iris [78.8K]
2.49/15 = 0.166
3.32/20 = 0.166

they both cost the same per oz
3 0
3 years ago
Read 2 more answers
a radio station had 234 tickets to a concert. They gave away 5 times as many tickets to listeners as to employees. how many tick
RSB [31]

Answer:

39 tickets were given to the employees

Step-by-step explanation:

1. Approach

First, list the given information, then form an equation based on the given information. Finally, solve the equation with simplification and inverse operations.

2.Given

A total of 234 tickets were given away

5 times as many tickets were given away to listeners compared to employees

-Call the number of tickets given away to employees (x)

3. Form an equation

(Tickets_given_to_employees) + (Tickets_given_to_listeners) = (Total_tickets)

Substitute,

x + 5x = 234

Simplify,

6x + 234

Inverse operations,

6x = 234

/6      /6

x = 39

5 0
3 years ago
Other questions:
  • Multiply (6 -7i)(3 - 6i)
    9·1 answer
  • Which unit of measure would be best to use to measure the capacity of a fish tank?
    14·1 answer
  • Can someone help me please? :)
    6·1 answer
  • Inset &lt; or &gt; to make a true statement.<br> -2.9 __ 3.8
    5·1 answer
  • We want to change .8333 to a fraction
    7·1 answer
  • 20. Find the midpoint between the given points.
    14·1 answer
  • HELP PLEASE I NEED HELP WILL MARK BRAINLIEST
    5·2 answers
  • A real estate developer builds a small number of model homes, one each in a different style. During an open house event, there i
    13·1 answer
  • Petra invests $10,800. After 4 years she has earned $3240 in interest.
    12·1 answer
  • The answer the answer
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!