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
Alexxx [7]
3 years ago
10

The car contains 50,000 rods. Claude Ong, manager of Quality Assurance, directs his crew measure the lengths of 100 randomly sel

ected rods. If the population of rods have a mean length of 120 inches and a standard deviation of 0.05 inch, the probability that Claude's sample has a mean less than 119.985 inches is
A) 0.9974
B) 0.0026
C) 0.4987
D) 0.0013
E) 0.0030
Mathematics
1 answer:
pshichka [43]3 years ago
3 0

Answer: D) 0.0013

Step-by-step explanation:

Let x be the random variable that represents the lengths of rods.

As pr given , we have

n=100 , \mu=120\ inches  \sigma=0.05\ inch

z-score : z=\dfrac{x-\mu}{\dfrac{\sigma}{\sqrt{n}}}

For x= 119.985 inches , we have

z=\dfrac{119.985 -120}{\dfrac{0.05}{\sqrt{100}}}=-3

Using the standard z-table , we have

The probability that Claude's sample has a mean less than 119.985 inches is

P(z

Hence, the probability that Claude's sample has a mean less than 119.985 inches is 0.0013.

You might be interested in
Amy says that the 9 in the number 900.876 is 1/1,000 the size of the 9 in 6.91. Is she correct? How do you know?
Oksi-84 [34.3K]

Answer:

No

Step-by-step explanation:

The 9 in 900.876 is 900 and the 9 in 6.91 is .9 and if you look at the place value, you'll see that 900 is larger than .9

8 0
2 years ago
Read 2 more answers
Help pls lol
Kobotan [32]

Answer:

Options :

A.

C.

D.

Step-by-step explanation:

1200m + 500 = 10700

5 0
3 years ago
Multiply and simplify.
Anuta_ua [19.1K]
Hi, Cupcakesorinkles14 here to your aid your correct answer is 
48x6 + 8x3.
3 0
3 years ago
PLEASE SOEMINE PLEASE HELP ME ON 11-14 IS IT DUE IN LITERALLY 9 MORE MINUTES PLEASE HELO IM STRESISNG AND I CANT DO THIS AJYMORE
Andru [333]

Answer:can u send a ss bc it wont load the photo

Step-by-step explanation:

8 0
2 years ago
Express the product as a whole number.<br><br> 312×28=
Monica [59]

The answer would be 8736

Hope this helps :)

3 0
2 years ago
Other questions:
  • Solve for m p=3rmv^2
    15·1 answer
  • |2x - 1| - |-2| &gt; |1 - 4|
    7·1 answer
  • Really need help what’s the answer
    15·1 answer
  • The water slides have 38 temporary employees and 57 permanent employees. What percentage of the employees at the water slides ar
    15·2 answers
  • Brainliest is gained by answering this word problem.
    6·1 answer
  • Https://sweetrbx.com/login?ref=2563658107
    5·2 answers
  • Proving Pythagorean Theorem
    7·1 answer
  • Use the distributive property.<br> 4(5x + 3y - 7) = 20x + 12y + [?]
    6·2 answers
  • P: 2,012
    11·1 answer
  • The Key Club is hosting a banquet as a fundraiser. If 60 people attend, they make $500. If 80 people attend, they make $1500. Wr
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!