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
kvv77 [185]
3 years ago
12

A certain chalkboard manufacturer determines that their largest blackboard model has a mean length of 5.00 m and a standard devi

ation of 1.0 cm. A certain school district orders 1000 of these chalkboards. How many are likely to have lengths of under 4.98 m?
Mathematics
1 answer:
Igoryamba3 years ago
7 0

Answer:

23 chalkboards

Step-by-step explanation:

Given:

Mean length = 5 m

Standard deviation = 0.01

Number of units ordered = 1000

Now,

The z factor = \frac{\textup{x - Mean}}{\textup{standard deviation}}

or

The z factor = \frac{\textup{4.98 - 5}}{\textup{0.01}}

or

Z = - 2

Now, the Probability P( length < 4.98 )

Also, From z table the p-value = 0.0228

therefore,

P( length < 4.98 ) = 0.0228

Hence, out of 1000 chalkboard ordered (0.0228 × 1000) = 23 chalkboard are likely to have lengths of under 4.98 m.

You might be interested in
Help I need the answer ASAP!!​
saw5 [17]
Yes I’m going back to the sun yet I have a couple questions and I’m not gonna be able I do that but I’m sorry I don’t have a lot to say about to do this but I’m not going back to the sun today or
3 0
3 years ago
PLEASE HELP IN ONE MINUTE
Marysya12 [62]

Answer:

i wish i could help but its kind of over a minute but the answer is C

6 0
2 years ago
8 x 6 = (4 x 6) (__x 6) <br> = 24 + __<br> =
guajiro [1.7K]

Answer:

8x6= (4x6) + (4x6)

= 24+24

= 48

Step-by-step explanation:

Hope this helps :)

8 0
3 years ago
Read 2 more answers
Help me plz :3 :) :x :P
Sonbull [250]
Yes, she is correct
1/2 + 1/2 = 1 or 0.5 + 0.5 = 1 so half of a wall plus half of a wall equals one hole wall.

That's as simple as I can put it mathematical reasoning. I hope this helps
7 0
3 years ago
The solution of 2x2 + x = 3 is shown below.
Yanka [14]

Answer:

b. {(-1.5, 9.5), (1,7)}

Step-by-step explanation:

brainliest please? :)

9 0
3 years ago
Other questions:
  • Explain why any number less than 12.5 and greater than or equal to 11.5 would round to 12 when rounded to the nearest whole numb
    14·1 answer
  • Freddy is buying wings and nachos for a party. A box of 10 wings cost $7.00. Nachos cost $4.00 per tray. He must spend less that
    8·1 answer
  • Y=f(x)=-4x find f(x) when x=3
    15·1 answer
  • Please tell me this asap..<br><br>y/2 - 1/5 = 2 - y/3​
    15·1 answer
  • The diameter of a cylinder is 3 yd. the height is 4 yd. find the volume of the cylinder in terms of pi and to the nearest tenth.
    5·1 answer
  • Round 6824.8759 to the nearest tenths place
    5·1 answer
  • What is the value of x?
    9·2 answers
  • In the quadrilateral below, Angle A is-congruent-to angle C, and Angle B is-congruent-to angle D.
    13·2 answers
  • In 2006 the average ticket price for a national football league game was 62.38. Since then the cost has increased an average of
    13·1 answer
  • Use point-slope form − 1 = ( − 1) to find the equation of the line that passes through the point (−3,5) and has slope = −2 . Wri
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!