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
qwelly [4]
3 years ago
8

\The lengths of a lawn mower part are approximately normally distributed with a given mean Mu = 4 in. and standard deviation Sig

ma = 0.2 in. What percentage of the parts will have lengths between 3.8 in. and 4.2 in.?
Mathematics
1 answer:
chubhunter [2.5K]3 years ago
3 0

Answer:

68.26% of the parts will have lengths between 3.8 in. and 4.2 in.

Step-by-step explanation:

The lengths of a lawn mower part are approximately normally distributed

\mu = 4

Standard deviation =\sigma =0.2

We are supposed to find  What percentage of the parts will have lengths between 3.8 in. and 4.2 in . i.e. P(3.8<x<4.2)

Formula : Z=\frac{x-\mu}{\sigma}

At x = 3.8

Z=\frac{3.8-4}{0.2}

Z=-1

Refer the z table for p value

p value =0.1587

At x =4.2

Z=\frac{4.2-4}{0.2}

Z=1

Refer the z table for p value

p value =0.8413

P(3.8<x<4.2)=P(x<4.2)-P(x<3.8)=0.8413-0.1587=0.6826

So, 68.26% of the parts will have lengths between 3.8 in. and 4.2 in.

You might be interested in
Last week, Clay wrote 4 checks for $20 each from his checking account and
Sidana [21]

Answer:

Step-by-step explanation:

clay will have

-80+96=16 dollars

the change in balance is +16

5 0
3 years ago
Ned scored 84 points in the first 6 games of the basketball season . How many points per game has Ned scored ?
crimeas [40]

Answer:

he scored 14 points per game :)

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Simplify −4√−48<br> Help , please ?
Talja [164]
The answer is -16 radical 3
4 0
3 years ago
Im stuck on this question helm me out I will mark you as brainliest​
agasfer [191]

Answer: <em><u>it is =4176000000000000</u></em>

Step-by-step explanation:

(2.9)(100000)(7.2)(10^2)

5(10^−8)

=

(290000)(7.2)(10^2)

5(10^−8)

=

2088000(10^2)

5(10^−8)

=

(2088000)(100)

5(10^−8)

=

208800000

5(10^−8)

=

208800000

5(1/100000000)=

208800000/1

20000000

=4176000000000000

hope i helped

-lvr

8 0
3 years ago
Samuel has a hamster cage that is a rectangular prism. It is 20 1/2 inches long, 12 inches
AleksandrR [38]

Answer:

Step-by-step explanation:

Volume= length × width × height.... Volume= 20 1/2 × 12 × 10 1/4..... Volume= 2521 1/2 cubic inches or 2521.5 cubic inches

6 0
3 years ago
Other questions:
  • A=p(1+ r/n)nt
    9·1 answer
  • the first term in a geometric series is 64 and the common ratio is 0.75. Find the sum of the first 4 terms in a series.
    8·1 answer
  • Price-club sells a 12-ounce box of crackers for $2.59 and Shop Mart sells 1-1/2 pound box of crackers for $4.68. What is the uni
    7·2 answers
  • Angle A measures (2x + 23)°. Angle B is supplementary to angle A and measures (4x + 46)°. Write and solve an equation to find th
    9·2 answers
  • Explain the Product and Quotient Properties of Square Roots and include examples.
    13·1 answer
  • Kevin works as a part-time vendor selling wallets for $20 each and hats for $15 each. He needs to earn a minimum of $450 per wee
    11·1 answer
  • To celebrate the first day of winter, Lin is putting magnets on some of the lockers (pre-COV ID of course). There are 100 locker
    7·2 answers
  • What is the intersection of the given lines?
    11·2 answers
  • Interpret two-step equation word problems (7th grade math)
    15·2 answers
  • Can someone please help me
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!