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
kipiarov [429]
3 years ago
7

Every day a factory produces 5000 light bulbs, of which 2500 are type 1 and 2500 are type 2. if a sample of 40 light bulbs is se

lected at random on a particular day, and examined for defects, what is the approximate probability that this sample contains at least 18 light bulbs of each type?
Mathematics
1 answer:
alisha [4.7K]3 years ago
5 0
<span>The solution: = 40, p = q = 0.5 P[x] = nCx *p^x *q^(n-x) when p = q = 0.5, the formula simplifies to P[x] = nCx/2^n = 40Cx/2^40 at least 18 of each type means 18 to 22 of (say) type I P(18 <= X <= 22) = 0.5704095 <------- qb mean = 40*0.5 = 20 SD = sqrt(npq) = sqrt(40*0.5*0.5) = 3.1623 z1= (18-20)/3.1623 = -0.63 , z2 = (22-20)/3.1623 = 0.63 P(-0.63 < z < 0.63) = 0.4713 <-------</span>
You might be interested in
Help me pls, here you are.
VLD [36.1K]

Answer:

The answer is -3/8

Step-by-step explanation:

3 0
3 years ago
Please help me fast ​
solong [7]

Answer:

5/4 do the 2 lines then add1 then u get the anwswr

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
16.) Choose the words that make the sentence true.
Effectus [21]

Answer:

12 is composite because it has more than two factors.

Step-by-step explanation:

8 0
3 years ago
How do you solve substitution problems in Pre Algebra
Rus_ich [418]
You multiply both of the equations until you have two of the same term the same like for example, say I have 4x and 5x. You want to multiply until both have the same number, so multiply 5x by four, then multiply 4x by five, and you will get 20x, then both of those cancel out and you will be left with the other variable, and you just solve like a normal equation.
4 0
3 years ago
Read 2 more answers
If f (x) = x + 7 and g (x) = StartFraction 1 Over x minus 13 EndFraction, what is the domain of (f circle g) (x)?
Rashid [163]

Answer:

R-{13}

Step-by-step explanation:

We are given that

f(x)=x+7

g(x)=\frac{1}{x-13}

We have to find the domain of fog(x).

fog(x)=f(g(x))

fog(x)=f(\frac{1}{x-13})

fog(x)=\frac{1}{x-13}+7=\frac{1+7x-91}{x-13}=\frac{7x-90}{x-13}

Domain of f(x)=R

Because it is linear function.

Domain of g(x)=R-{13}

Because the g(x) is not defined at x=13

fog(x) is not defined at x=13

Therefore, domain of fog(x)=R-{13}

6 0
3 years ago
Read 2 more answers
Other questions:
  • What is log2^45 to four decimal places?<br><br> a.5.4919<br> b.3.8067<br> c.1.3522<br> d.0.1821
    14·1 answer
  • Sherri hikes on the Pacific Coast trail. She plans to hike 3.72 miles. If she hikes at an average speed of 1.2 miles per hour, h
    9·1 answer
  • The solution to 3.2x = 11.52 is x = ___.<br><br> 3.6<br> 8.32<br> 14.72<br> 36.8
    15·1 answer
  • Math help plss !! uwu im stuck.
    11·1 answer
  • HUrRiCAn KatrINa?? MORe liKE?
    10·1 answer
  • The sum of 3 times the value of x and 2 is equal to 4 less than 5 times the value of x
    5·1 answer
  • Which method correctly solves the equation using the distributive property? Negative 0.2 (x minus 4) = negative 1.7
    11·1 answer
  • Which of the following terms best describes the relationship between /W and /X ( Answer as soon as possible please)
    12·1 answer
  • How much is 72 kilograms in pounds
    6·2 answers
  • The Fresh and Green Company has a savings plan for employees. If an employee
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!