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
sertanlavr [38]
3 years ago
12

A batch of 20 semiconductor chips is inspected by choosing a sample of 3 chips. Assume 10 of the chips do not conform to custome

r requirements. Round your answers to the nearest integer. a. How many different samples are possible? b. How many samples of 3 contain exactly one nonconforming chip? c. How many samples of 3 contain at least one nonconforming chip?
Mathematics
1 answer:
Hatshy [7]3 years ago
6 0

Answer:

A batch of 20 semiconductor chips is inspected by choosing a sample of 3 chips. Assume 10 of the chips do not conform to customer requirements.

a) Number of different samples = 20C3 =  \frac{20!}{3!(17!)} =1140

b) 2 good and one bad chip

Number of samples = 10C2 * 10C1 = 45 * 10 =450

c) 2 good 1 bad + 1 good 2 bad + 3 bad

Number of samples = 10C2 * 10C1 + 10C1 * 10C2 + 10C3

= 450+450+120=1020

You might be interested in
Please answer! Will mark brainliest. <br><br> -3|5x-2|&gt;4
Mrac [35]

Answer:

Step-by-step explanation:

eact from : x= 2, 6/5

decial from : x= 2, -1.2

mixed number from  :x=  2, - 1 1/5

6 0
3 years ago
Read 2 more answers
A line has x-intercept of 6 and y-intercept of -4.Find the slope of the line.
Zigmanuir [339]

x-intercept is 6, coordinates (6,0)

y-intercept -4, coordinates (0,-4)

gradient= y1-y2/x1-x2= 0-(-4)/6-0= 4/6= 2/3 or 0.667 (3.s.f.)

3 0
3 years ago
A stage in the shape of a semi circle had a diameter of 42 ft. What is area of the stage? Use 22/7 for π. PLZ I NEED FAST TEST
zavuch27 [327]

A semi circle is half a full circle. Find the area of the full circle and divide it by 2.

Area of a circle = pi x r ^2

R is half the diameter

Area of full circle:

Area = 22/7 x 21^2

Area = 1386 sq. Ft

Area of stage = 1386/2 = 693 square feet

5 0
3 years ago
Read 2 more answers
Heather earns $16 for each hour she works as a lifeguard. Choose the equation that models the situation, where h represents the
lord [1]

Answer:

I'm pretty sure the answer is m = 16h

Hope this helps!

Please mark as brainliest!

5 0
2 years ago
lauren is the youngest of four sisters. the average of their ages(all different whole numbers) is 9 years. what is the oldest th
Elina [12.6K]

The max of Lauren's age --> the minimum of the others' ages, 1, 2 & 3

4*avg = 4*9 = 36

36 - (1+2+3) = 30

Lauren is 30 yrs of age, or younger.

3 0
3 years ago
Other questions:
  • A regular polygon has 9 sides. What is the measure of each interior angle of the polygon?
    11·1 answer
  • Is 4/12more or less than 4/6
    14·2 answers
  • What is the lowest fraction of 0.875cm
    15·1 answer
  • Round 1.625 to the nearest hundredth
    10·2 answers
  • A ball is dropped from a treetop 256 feet above the ground. How long does it take to hit the ground? (s = 16t2)
    7·2 answers
  • a photograph is 5.5 in. long and 3.2 in. wide. it must be enlarged so that both dimensions are 1.8 times greater. how long will
    12·1 answer
  • It takes Deanna seven hours to paint a fence. What fraction of the fence does she paint in one hour?
    9·1 answer
  • The Community College Survey of Student Engagement reports that 46% of the students surveyed rarely or never use peer or other t
    7·1 answer
  • Can someone help please!
    5·1 answer
  • The angle of elevation to a nearby tree from a point on the ground is measured to be 54^{\circ} ∘ . How tall is the tree if the
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!