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
attashe74 [19]
3 years ago
8

The diameter of small Nerf balls manufactured overseas is expected to be approximately normally distributed with a mean of 5.2 i

nches and a standard deviation of .08 inches. Suppose a random sample of 20 balls is selected. Calculate the mean of the sampling distribution of the sample mean.
Mathematics
1 answer:
ioda3 years ago
7 0

Answer:

5.2 inches

Step-by-step explanation:

The diameter of small Nerf balls follows normally distribution with mean 5.2 inches and standard deviation 0.08 inches.

We have to calculate the mean of sampling distribution when 20 balls are selected randomly.

Here, μ=5.2 and σ=0.08.

We know that mean of sampling distribution for mean is equal to the population mean.

mean of sampling distribution for mean= μxbar=μ= 5.2

Thus, mean of the sampling distribution of the sample mean is 5.2 inches

You might be interested in
Simplify √ 144x2 <br><br> A. 8x2√ 6 <br> B. 2x2√ 2 <br> C. 8√ 6x <br> D. 12x
Stella [2.4K]
√(144*x²) = (√144)*(√x²) = 12x

Answer is D.12x.
3 0
3 years ago
Read 2 more answers
A marketing company is designing a new package for a box of cereal. They have determined that the function C(x) = 4.5 x2 models
Vlad1618 [11]

So the function is

\\ \rm\rightarrowtail y=4.5x^2

As we know

  • x²≥0
  • x≥0

hence domain is

\\ \rm\rightarrowtail D_f\in R

  • Least value of function is at x²=0 i.e 0

Hence range:-

\\ \rm\rightarrowtail R_f\in [0,\infty)

6 0
2 years ago
Adrian has 75 coins consisting of quarters and dimes. The combined value of the coins is $10.20. How many of each type of coin d
Sergio [31]

Answer:

40 quarters and 2 dimes

Step-by-step explanation:

I did .25 (the amount of a quarter) and put it into a calculator adding.25 untill I got to 10 and then just 2 dimes bc 10+10 is 20

6 0
3 years ago
Find the center and radius of the circle whose diameter has an endpoint at (-3, -4) and the origin.
Zina [86]

Given end points of diameter,

(x1,y1)=(-3,-4)

(x2,y2)=(0,0)

Now,

the equation of circle is,

(x-x1)(x-x2)+(y-y1)(y-y2)=0

or, (x+3)(x-0)+(y+4)(y-0)=0

or, x^2 +3x +y^2 +4y =0

or, x^2 +y^2 +3x + 4y=0

which is in the form of x^2 +y^2 +2gx +2fy + c=0

where,

g=3/2

h=2

c=0

Now,

radius(r) =  \sqrt{ {g}^{2}  +  {f}^{2} - c  } \\  =  \sqrt{ \frac{ {3}^{2} }{ {2}^{2} } +  {2}^{2}  - 0 }  \\  =  \sqrt{ \frac{9}{4}  + 4}  \\  =   \sqrt{ \frac{25}{4} }  \\  =  \frac{5}{2}

6 0
3 years ago
What is the equivalent fraction for 24/0.64?
mestny [16]

Answer:

See below

Step-by-step explanation:

24/ .64   =    2400 / 64   =    37  1/2   =   75/2  

4 0
2 years ago
Read 2 more answers
Other questions:
  • A population of 510,000 toads is expected to shrink at a rate of 6.2% per year. Which is the best prediction for the toad popula
    6·2 answers
  • An art gallery has 8 new paintings, all the same size, but enough room on the wall for only 6 of them. How many ways can the dir
    9·1 answer
  • All numbers less than or equal to 87 and greater than or equal to 83
    8·1 answer
  • Which of the following sets of intergers is a pythagorean triple
    10·1 answer
  • 22x+25-19=180 what does x equal
    6·2 answers
  • Joel is looking at costs for using a gym. He could pay $50 per month for unlimited use or he could pay $12 per month plus $4 per
    13·2 answers
  • .
    9·1 answer
  • PLEASE HELP I'LL GIVE BRAINILLEST PLEASE NO FAKE ANSWERS ITS DUE REALLY SOON :(
    11·2 answers
  • ΔTUV∼ΔMLV
    13·1 answer
  • .753 repeating as a fraction
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!