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
irina1246 [14]
3 years ago
10

A design engineer wants to construct a sample mean chart for controlling the service life of a halogen headlamp his company prod

uces. He knows from numerous previous samples that when this service life is in control it is normally distributed with a mean of 500 hours and a standard deviation of 20 hours. On three recent production batches, he tested service life on random samples of four headlamps, with the results?
Mathematics
1 answer:
ArbitrLikvidat [17]3 years ago
4 0

Answer:

1 495 500 505 500

2 525 515 505 515

3 470 480 460 470

Step-by-step explanation:

Suppose to be sample are

  • 495 500 505 500
  • 525 515 505 515
  • 470 480 460 470              

In the given sample if sample 3 is difficult to control .Because engineer wants to construct a sample mean controlling the service to his company produces.In sample set first two sets have continuous four headlamps but in third it is difficult to handle the control.

You might be interested in
Are These Graphs Functions?<br><br>​
chubhunter [2.5K]
Number one is but number two is not

of more than 1 dot is on an “up and down” line then it’s not a function
4 0
3 years ago
a chicken can run at a top speed of 9 miles per hour find the top speed of a chicken in miles per minute round to the nearest te
eduard

so if you do 9 divided by 60 and it will give you 0.15 and that is your answer

5 0
2 years ago
Read 2 more answers
What is this number written in word form? 4,139,000 no links
Sveta_85 [38]

Answer:

h

Step-by-step explanation:

cyxctx9otxfizfizgbjmkk

3 0
3 years ago
Read 2 more answers
Angle 6 is congruent to angle 3. Angle 3 is congruent to angle 1. So angle 6 is congruent to angle 1
dangina [55]

Answer:

Yes

Step-by-step explanation:

Congruent means equivalent so if <6 is = to <3 then due to <3 being = to <1 <6 also has to be = to <1.

7 0
2 years ago
Use the side-splitter theorem to solve for x in the triangle below.<br> 21<br> 42
alexandr1967 [171]

x = 8

Solution:

Side-splitter theorem:

<em>If a line is parallel to one side of a triangle and the line intersects the other two sides, then this line divides those two sides proportionally.</em>

$\Rightarrow\frac{4}{21} =\frac{x}{42}

Do cross multiplication, we get

⇒ 4 × 42 = 21x

Divide by 21 on both sides, we get

⇒ 4 × 2 = x

⇒ 8 = x

Switch the sides.

⇒ x = 8

The value of x is 8.

8 0
3 years ago
Other questions:
  • How many synapses occur in this reflex arc?
    14·1 answer
  • Find the area plz and hurry
    11·1 answer
  • Sam has 2 2/3 cups of dry cat food that he will divide equally among 3 cats
    8·2 answers
  • 3/4 Multiply 2/7 simplest form
    10·2 answers
  • In a class 30 of students, 13 have a cat and 7 have a dog. There are 4 students who
    9·1 answer
  • Why is new york considered a man made feature? Please use complete sentences and must be a paragraph thanks
    14·1 answer
  • When the system is executed, the system crashes with probability 0.05 if only Module A fails. The system crashes with probabilit
    6·1 answer
  • Help!!!!!!!!!!!!!!!!!!!! Pleaseee
    14·2 answers
  • Someone help me with 10-15 ASAP please
    13·1 answer
  • 2-5=x/1.2<br>(please solve this)​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!