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
Anna11 [10]
3 years ago
15

At Least One Defective iPhone It has been reported that 20% of iPhones manufactured by Foxconn for a product launch did not meet

Apple’s quality standards. An engineer needs at least one defective iPhone so she can try to identify the problem(s). If she randomly selects 15 iPhones from a very large batch, what is the probability that she will get at least 1 that is defec- tive? Is that probability high enough so that she can be reasonably sure of getting a defect for her work?
Mathematics
1 answer:
bija089 [108]3 years ago
7 0
We can use the binomial theorem to find the probability that 0 out of the 15 samples will be defective, given that 20% are defective.
P(0/15) = (15C0) (0.2)^0 (1 - 0.2)^15 = (1)(1)(0.8)^15 = 0.0352
Then the probability that at least 1 is defective is equal to 1 - 0.0352 = 0.9648. This means there is a 96.48% chance that at least 1 of the 15 samples will be found defective. This is probably sufficient, though it depends on her significance level. If the usual 95% is used, then this is enough.
You might be interested in
The length of the hypotenuse of a right triangle is 4.5 inches. The length of one of the legs is 2.7 inches. What is the length
cupoosta [38]

Answer:

B. 3.6 inches

3 0
3 years ago
ASAP PLEASE HELP!! SCALE FACTOR! EASY!!
zysi [14]

Answer:

1.6667

Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
I need some help with this question :/
Masteriza [31]
You have one of the answers correct. The fraction 4/8 is equal to 1/2

Other answers are: 5/10, 10/20, and 6/12

If you reduced each of those fractions, you'd get to 1/2. 

You can use a calculator to find that
4/8 = 0.5
1/2 = 0.5
5/10 = 0.5
10/20 = 0.5
6/12 = 0.5
All fractions mentioned lead to the same decimal value, so this confirms all of the fractions are equivalent to one another.
7 0
3 years ago
Read 2 more answers
A train heads south out of Bloomington an hour after a northbound train
ahrayia [7]

9514 1404 393

Answer:

  • northbound: 2.5 hours
  • southbound: 1.5 hours

Step-by-step explanation:

When the second train leaves the station, the trains are already 63 miles apart. The rate of increase of their separation is (57 +63) = 120 miles per hour. The remaining 243-63 = 180 miles of separation will be achieved in ...

  (180 mi)/(120 mi/h) = 1.5 h

The northbound train will have traveled 2.5 hours; the southbound train will have traveled 1.5 hours when the trains are 243 miles apart.

7 0
2 years ago
Hepl me what is the answer to this math question
Luda [366]

Answer:

c

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • . Identify the converse of the conditional statement. Determine the truth values of the original conditional and its converse. I
    11·1 answer
  • How to write (7,-6);m= 1/2 in slope intercept form?
    11·2 answers
  • At the beach, 39% of people are on the boardwalk and 23% are on the sand. If the rest are in the water, what percentage of peopl
    10·1 answer
  • If the sum of a number and eight is tripled the result is four less than twice the number. Find the number
    10·1 answer
  • Which of the following is a reduction in the price of the vehicle, generally offered by the manufacturer?
    10·2 answers
  • Why isn't 20 over 100 proportional
    11·1 answer
  • Simplify the expression:<br> (1 + 6g)(3) =
    11·1 answer
  • What is the value of the expression 10-1/2^4x48
    5·1 answer
  • Kevin has a checking account. This month he deposits three paychecks. Each paycheck is for $225.75. He also makes two payments f
    7·2 answers
  • HELP PLEASE IM HORRIBLE WILL GIVE A BRAIN LIST IF RIGHT
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!