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
zzz [600]
3 years ago
14

The J.O. Supplies Company buys calculators from a non-US supplier. The probability of a defective calculator is 10 percent. If 3

calculators are selected at random, what is the probability that one of the calculators will be defective
Mathematics
1 answer:
RSB [31]3 years ago
3 0

Answer:

There is a 24.3% probability that one of the calculators will be defective.

Step-by-step explanation:

For each calculator, there are only two possible outcomes. Either it is defective, or it is not. So we use the binomial probability distribution to solve this problem.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

The probability of a defective calculator is 10 percent.

This means that p = 0.1

If 3 calculators are selected at random, what is the probability that one of the calculators will be defective

This is P(X = 1) when n = 3. So

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 1) = C_{3,1}.(0.1)^{3}.(0.9)^{2} = 0.243

There is a 24.3% probability that one of the calculators will be defective.

You might be interested in
Guys Pls Help ASAP! Will Give Brainliesttt. <br><br> Thxx
Allisa [31]

Answer:

23. x= -2/5 x= -5

24. x= 3/4 x= -1/6

25. x= 7/3. x= -5/4

26. x= 3 x= -2/3

27. x= 1. x= -2/7

28. x= 9/4. x= -1/3

29. x= 2/5 x= 1/3

30. x= 2/3 x= 1/2

6 0
3 years ago
Corinne solved the equation below:
tia_tia [17]

Answer: she is NOT correct the answer should be X= 19

How?:

the equation was 5x = 95

the 5 and x is being multiplied the opposite of multiplication is dividing

so 95/5= 19

therefor x= 19 and NOT 90

5 0
2 years ago
Read 2 more answers
Deja wants to put as much as she can into a retirement account as soon as she starts working. She deposits $10,000 at then end o
sdas [7]
The answer is $56,370.93. 
5 0
3 years ago
HELP!! WILL GIVE BRAINLIEST TO WHOEVER ANSWERS CORRECTLY
True [87]

2. You simplified parenthesis on both sides

3. Subtracted 14 from -25 on right side

6. Divided each side by 9

6 0
2 years ago
Determine if the statement is always, sometimes or never true. There are 300 degrees in the sum of the interior angles of a poly
Marrrta [24]

Answer:

Never

Step-by-step explanation:

Using the formula to find the sum of the interior angles, (n-2) * 180, we can work backwards.

300/180 +2 = 11/3 or 3.666. Polygons cannot have decimal sides therefore your answer is never.

6 0
2 years ago
Other questions:
  • 1. What is the difference between –4 and 6?
    5·2 answers
  • Mistery number . CLUES: -it has the digits 8,5 and 6 . - it is a odd number . - it has 8 in the hundreds place . WHAT IS THE MIS
    11·1 answer
  • A rectangle basin is being filled with water. The basin is 7 feet long, 12 feet wide, and 4 feet high. How much water is going t
    6·1 answer
  • Find q if p = -12 and the quotient p/q = -3.
    8·1 answer
  • Whats the output of x + 6 of 3
    11·1 answer
  • What is the circumference of the circle if AB=6 in.
    9·2 answers
  • Which expression is equivalent to -3x^2 +24x-43 ?
    11·1 answer
  • In which number does the digit 5 have greater value 5,214 or 6,589
    14·2 answers
  • The body temperature of adults are normally distributed with a mean of 98.6 f and a standard deviation of 0.71f what temperature
    12·1 answer
  • Please help.<br> I need to know if the sequence is arithmetic
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!