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
Alexeev081 [22]
3 years ago
9

The length of a screw produced by a machine is normally distributed with a mean of 0.75 inches and a standard deviation of 0.01

inches. what percent of screws are between 0.72 and 0.78 inches? (1 point 68% 75% 99.7% 100%
Mathematics
2 answers:
Soloha48 [4]3 years ago
7 0

Answer: There is 99.7% of screws are between 0.72 and 0.78 inches.

Step-by-step explanation:

Since we have given that

Mean = 0.75 inches

Standard deviation = 0.01 inches

Since the length of a screw produced by a machine is normally distributed.

So, We need to find the percent of screws are between 0.72 and 0.78 inches.

Since we have that

P(0.72

And we know that

z=\frac{X-\mu}{\sigma}

So, it becomes,

P(\frac{0.72-0.75}{0.01}

Hence, there is 99.7% of screws are between 0.72 and 0.78 inches.

White raven [17]3 years ago
6 0
99.7%
You can use normalCdf(.72,.78,.75,.01) to find the answer or if you standardize your numbers (z scores) normalCdf(-3,3,0,1).
You might be interested in
X^2+26x+c<br> find the value of c that makes each trinomial a perfect square
alekssr [168]

Answer:

c = 169

Step-by-step explanation:

We can use FOIL to determine this after factoring out the equation.

(x+13)(x+13)

F: (x*x)

O: (x*13)

I: (13*x)

L: (13*13)

x^2 + 26x + 169

3 0
3 years ago
Joe collect stamps he decided to sell half of his stamp collection to Frank and use the money to buy 10 new Sam's Joe now has 26
ANTONII [103]

Answer:

32

Step-by-step explanation:

If he has 26 now, he had 16 before he bought the 10 more. If he had 16, he would have had 32 before he sold half of them

6 0
3 years ago
PLZZ HELP!!!
svlad2 [7]
It is not possible if so it wouldn’t be iscosceles
8 0
3 years ago
The ratio of boys to girls at the dance was 8 to 4. How many girls were at the dance if there were 88 boys at the dance?
nevsk [136]

88/8=11.

So multiply 4 by 11.

4x11=44

So the ratio is 88:44.

There are 44 girls at the dance

---

hope it helps

5 0
3 years ago
Select all the statements that correctly describe the solutions to this system of equations?
Luba_88 [7]

x + y = 9

x = 9 - y

2x - y = 0

2(9 - y) - y = 0

18 - 2y - y = 0

-3y = -18

y = 6

x = 9 - y

x = 9 - 6

x = 3

5 0
3 years ago
Other questions:
  • Convert 3/16 inch to a decimal
    11·1 answer
  • What is the least common multiple of 5 and 150
    8·2 answers
  • If 1 m is approximately 3.28 feet how many meters are in 20 feet
    12·1 answer
  • How do I solve this
    8·1 answer
  • The graph of y = 5x2 is the graph of y = x2.
    7·2 answers
  • Mr. Rodriguez, a college instructor, can grade his class papers in 3 hours while it takes his assistant 4 1/2 hours. If Mr. Rodr
    11·1 answer
  • No one seems to be he;ping with this question so please help and show proof of how u got the answer
    6·1 answer
  • Please help I don't have much time left
    5·2 answers
  • 262 + 923 + 231 - 138 = ?​
    5·1 answer
  • What is the equation of the line?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!