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
gtnhenbr [62]
3 years ago
8

A shipment of beach balls with a mean diameter of 28 cm and a standard deviation of 1.3 cm is normally distributed. By how many

standard deviations does a beach ball with a diameter of 26.7 cm differ from the mean?
A-1
B-1.3
C-2
D-3
Mathematics
2 answers:
sweet-ann [11.9K]3 years ago
6 0

Answer:

A. -1

Step-by-step explanation:

We have been given that a shipment of beach balls with a mean diameter of 28 cm and a standard deviation of 1.3 cm is normally distributed.  

Since z-score represents that a raw score is how many standard deviation above or below mean.

To solve our given problem we will use z-score formula.

z=\frac{x-\mu}{\sigma}, where,

z=\text{z-score},

x=\text{Raw score},

\mu=\text{Mean},

\sigma=\text{Standard deviation}.

Upon substituting our given values in z-score formula we will get,

z=\frac{26.7-28}{1.3}

z=\frac{-1.3}{1.3}

z=-1

Therefore, a beach ball with a diameter of 26.7 cm differs -1 standard deviation from the mean and option A is the correct choice.

ipn [44]3 years ago
5 0

Answer: 1

Step-by-step explanation: trust me, I took the test

You might be interested in
Help pls<br> ty in advance
svetoff [14.1K]

\bold{\huge{\underline{ Solution\: 2 }}}

  • The name of the circle is <u>IJKL</u>
  • The name of central Angle
  • \sf{\underline{= {\angle} IHJ }}
  • The name of the secant = <u>KL</u>

{\bigstar}Circle :- It is a round figures, which has no end points.

{\bigstar} Central angle :- It the angle ,which lie in the middle of the circle.

  • Here, H is the mid point of the circle .So, Angle IHJ is the central angle.

{\bigstar} Secant :- A line drawn in circle in such a way that it intersect the circle from two distinct points. Then, It is called secant .

  • Here, KL is the line which acts as a secant because it intersect the circle from point K and point L.

\bold{\huge{\underline{ Solution\: 3 }}}

  • Semicircle = FGH and FIH
  • Minor Arc :- FG or GH
  • Major Arc :- FHG or GFH

{\bigstar} Semicircle :- Semicircle is nothing but the half of the circle.

<u>Here</u><u>, </u><u>In </u><u>second </u><u>diagram </u>

  • FGH and FIH are acting as two semicircles which simulatineously forming one circle.

{\bigstar} Minor Arc :- Minor Arc is nothing but the smaller arc of the circle and it is always smaller than the half of the circle that is semicircle.

<u>Here</u><u>, </u>

  • FG or GH are the minor arc of the given circle.

{\bigstar} Major Arc :- Major Arc is nothing but the largest arc of the circle and it is always larger than the half of the circle that is semicircle.

<u>Here</u><u>, </u>

  • FHG or GFH is the major arc as it is larger than the semicircle of the given circle .
7 0
2 years ago
Math (10 points) please help
Valentin [98]

Answer:

Part 1. 50 and 17 denotes that he earns $50 for each shift he works at the dinner and $17 for each dog-walking job.

Variable x denotes the number of shifts at the dinner and y variable denotes the number of dog -walking job.

Part 2. The income from shift of work at the diner that is 50x, and the income from dog walking work that is 17y.

Part 3. The total income from the diner is given by 50x.

Step-by-step explanation:

Each week, Aubrey earns $50 for every shift he works at the diner and $17 for every dog-walking job.  

He uses the expression (50x + 17y) to keep track of his earning.

Part 1. Here the coefficient of the expressions 50 and 17 denotes that he earns $50 for each shift he works at the dinner and $17 for each dog-walking job.

And the variable x denotes the number of shifts at the dinner and y variable denotes the number of dog -walking jobs.

Part 2. Therefore, there are two terms in the expression, one is the income from the shift of work at the diner that is 50x and the other is the income from dog walking work that is 17y.

Part 3. The total income from the diner is given by 50x. (Answer)

7 0
2 years ago
What is 4.2 kilometers in meters
vovikov84 [41]
THE ANSWER IS 42,000.

TO GET THIS WE KNOW THAT 1 KILOMETERS IS 10,000. 

SO YOU TAKE 4.2 AND MULTIPLY IT BY 10,000. THAT EQUALS 42,000.
4 0
3 years ago
If y varies directly with x, with k=0.75,what is the value of y when x=12
erma4kov [3.2K]

Answer:

9

Step-by-step explanation:

y=x

y=kx

substitute k for 0.75 and x for 12 in the above equation

y=0.75×12

y=9

7 0
2 years ago
Two triangles with the same corresponding side lengths will be congruent is known as the ____.? Need help
erma4kov [3.2K]

SSS or Side Side Side Theorem. 

We have congruent triangles when corresponding sides are congruent; we call it a theorem but that's pretty much the definition of congruent triangles.


3 0
3 years ago
Read 2 more answers
Other questions:
  • What is the value of f(x) = 36x when x =1/2
    9·1 answer
  • Find a 2×2 matrix a for which where eλ is the eigenspace associated with the eigenvalue λ.
    9·1 answer
  • What is c=2(3.14)r solve for r
    15·1 answer
  • The probability that a battery will last 10 hr or more is 0.9, and the probability that it will last 15 hr or more is 0.13. give
    15·1 answer
  • Help me solve this question please
    8·1 answer
  • Complete the proof to show that ABCD is a parallelogram.
    9·1 answer
  • A quarter has a diameter of 2.4. if it makes 8 rotations how far did it roll
    10·2 answers
  • 1st fight: 53 points
    9·1 answer
  • 2 1 point
    6·1 answer
  • Which statements apply to the expression 3/5 ? Check all that apply​
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!