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
Vika [28.1K]
2 years ago
5

A purchaser of electric relays buys from two suppliers, A and B. Supplier A supplies two of every three relays used by the compa

ny. If 60 relays are selected at random from those in use by the company, find the probability that at most 38 of these relays come from supplier A. Assume that the company uses a large number of relays. (Use the normal approximation. Round your answer to four decimal places.)
Mathematics
1 answer:
inessss [21]2 years ago
5 0

Answer:

The probability that at most 38 of the 60 relays are from supplier A is P(X≤38)=0.3409.

Step-by-step explanation:

We can model this question with a binomial distribution random variable.

The sample size is n=60.

The probability that the relay come from supplier A is p=2/3 for any relay.

If we use a normal aproximation, we have the mean and standard deviation:

\mu=np=60*(2/3)=40\\\\\sigma=\sqrt{npq}=\sqrt{60*(2/3)*(1/3)} =3.65

The probability that at most 38 of the 60 relays are from supplier A is P(X≤38)=0.3409:

P(X\leq38)=P(X

You might be interested in
Simplify 4x+5/6x^2-x-12 subtract 5x/6x^2-x-12
neonofarm [45]
<span>4x+5/6x^2-x-12 - (5x/6x^2-x-12)
= (4x + 5 - 5x)/(</span>6x^2-x-12)
= (-x + 5) / (2x - 3)(3x +4)
<span>
answer

       -x + 5
---------------------
</span>  (2x - 3)(3x +4)
7 0
3 years ago
A farmer finds there is a linear relationship between the number of bean stalks, n, she plants and the yield, y, each plant prod
-Dominant- [34]

Answer:

Step-by-step explanation:

Given that a farmer finds there is a linear relationship between the number of bean stalks, n, she plants and the yield, y, each plant produces

When we consider this graph as a straight line, the two points lying on the line would be

(30, 30) and (34, 28) taking n as horizontal and y vertical

Using two point equation we find that

the equation of the line is

\frac{y-y_1}{y_2-y_1} =\frac{x-x_1}{x_2-x_1}

Substitute the points as x =n

\frac{y-30}{28-30} =\frac{x-30}{34-30}\\y-30 = -0.5(x-30)\\y = -0.5x+45

is the linear relationship between n and y

7 0
2 years ago
What number should be placed in the box to help complete the division calculation? can someone please do the problem (8587/12) s
disa [49]

Answer:

8587 should be in the box

Step-by-step explanation:

we would see it question as:       12/- 8587

12 goes into 85  7 times, so 7

12 goes into 18 1 time, so 1

12 goes into 67 5 times, so 5

then the remainder is 7

or you further divide to get . 5 8 3333333...

so your answer should be 715r7 or 715.58333

5 0
3 years ago
In a downtown parking lot there are 5 times as many cars there as trucks. There are 12 trucks in the parking lot. How many cars
torisob [31]
12 * 5 = 60 Cars & 12 Trucks
7 0
3 years ago
Read 2 more answers
A function is created to represent the amount of money you save or spend each day of the week. What restrictions would be made t
ollegr [7]

The range would only include positive integers.

Answer B

6 0
3 years ago
Other questions:
  • 5. Review: Determine if the data set is a function and explain why or why not: {(-5,6).(-6, 2).(-2,6). (-1,8). (4,6)
    8·1 answer
  • A sandwich shop offers 4 different kinds of bread and 6 different kinds of meat. How many different sandwiches can be made using
    8·2 answers
  • Covert 2 cubic yards to cubic feet
    10·2 answers
  • Lisa and Lori each dried 1/3 of the glasses. What fraction of the glasses
    7·1 answer
  • Of the vehicles on the road, 1/2 are cars and 1/8 are motorcycles. What fraction of the vehicles are not cars or motorcycles?
    15·1 answer
  • What is the length of BC in the right triangle below
    13·2 answers
  • How do u work.like do u use this
    12·1 answer
  • X - 5 (x-1) = x - (2x - 3)
    7·2 answers
  • HELP!! I WILL GIVE FREE BRAINLIEST TO THE FIRST CORRECT ANWSER!
    14·2 answers
  • Una bolsa contiene 3 canicas rojas, 8 azules y 10 amarillas. ¿Cuál es la razón de canicas rojas al total de canicas en su forma
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!