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
Nikitich [7]
3 years ago
10

As a general rule, the sampling distribution of the sample proportions can be approximated by a normal probability distribution

whenever
a)np greater than or equal to 5
b) n(1-p) greater than or equal to 5
c) n greater than or equal to 30
d) both a and b are true
A continuous random variable is uniformly distributed between a and b. The probability density function between a and b is
a) zero.
b) (a - b).
c) (b - a).
d) 1/(b - a).

A population has a mean of 84 and a standard deviation of 12. A sample of 36 observations will be taken. The probability that the sample mean will be between 80.54 and 88.9 is

a) 0.0347.
b) 0.7200.
c) 0.9511.
d) None of the alternative answers is correct.
Mathematics
2 answers:
OLga [1]3 years ago
7 0
C cause it’s the right answer
Alexxandr [17]3 years ago
7 0
C, I took this quiz
You might be interested in
Consider the following table does this represent a function why or why not?
NARA [144]
This doesn't represent an function. Because the output is uneven to the other outputs,
1=4, 2=7 if you divided 2 into 2 parts it would equal 1=3.5 not 4.
8 0
3 years ago
Is one side of a rectangular fish tank best represented by a point, line, plane, or ray?
Inessa05 [86]
<span>One side of a rectangular fish tank can be best represented by a plane because it is two dimensional.Whereas,point,line or a ray are all one dimensional and hence they cannot represent a rectangle as it has two dimensions.</span>
6 0
3 years ago
Read 2 more answers
Joaquin and Trisha are playing a game in which the lower median wins the game. Their scores are shown below. Joaquin's scores: 7
alekssr [168]

Answer:

Step-by-step explanation:

Given

Joaquin's score is 75,72,85,62,58,91

and Trisha's score is 92,90,55,76,91,74

Arranging score in order of value we get

Joaquin's : 58,62,72,75,85,91

Trisha's : 55,74,76,90,91,92

as no of values is even therefore their median is

Joaquin's=\frac{72+75}{2}=73.5

Trisha's =\frac{76+90}{2}=83

Therefore median of Joaquin's is lower

Thus Joaquin wins the game

5 0
3 years ago
Read 2 more answers
Find the dimensions of the open rectangular box of maximum volume that can be made from a sheet of cardboard 11 in. by 7 in. by
11111nata11111 [884]

Answer:

The dimension of the open rectangular box is 8.216\times 4.216\times 1.392.

The volume of the box is 8.217 cubic inches.

Step-by-step explanation:

Given : The open rectangular box of maximum volume that can be made from a sheet of cardboard 11 in. by 7 in. by cutting congruent squares from the corners and folding up the sides.

To find : The dimensions and the volume of the open rectangular box ?

Solution :

Let the height be 'x'.

The length of the box is '11-2x'.

The breadth of the box is '7-2x'.

The volume of the box is V=l\times b\times h

V=(11-2x)\times (7-2x)\times x

V=4x^3-36x^2+77x

Derivate w.r.t x,

V'(x)=4(3x^2)-2(36x)+77

V'(x)=12x^2-72x+77

The critical point when V'(x)=0

12x^2-72x+77=0

Solve by quadratic formula,

x=\frac{18+\sqrt{93}}{6},\frac{18-\sqrt{93}}{6}

x=4.607,1.392

Derivate again w.r.t x,

V''(x)=24x-72

Now, V''(4.607)=24(4.607)-72=38.568>0 (+ve)

V''(1.392)=24(1.392)-72=-38.592 (-ve)

So, there is maximum at x=1.392.

The length of the box is l=11-2x

l=11-2(1.392)=8.216

The breadth of the box is b=7-2x

b=7-2(1.392)=4.216

The height of the box is h=1.392.

The dimension of the open rectangular box is 8.216\times 4.216\times 1.392.

The volume of the box is V=l\times b\times h

V=8.216\times 4.216\times 1.392

V=48.217\ in.^3

The volume of the box is 8.217 cubic inches.

5 0
3 years ago
BRAINLIEST ASAP! PLEASE ANSWER!!!!!
hodyreva [135]
Similarities: They both are polynomials of degree 2, both of their graphs is a parabola, both have either 2 or 0 real solutions, they are both continuous functions over R 
(DOS= difference of two squares, PST=perfect square trinomial 
Differences: PST has three terms, whereas the difference of squares has 2. PST's factors are both the same, whereas DOS's elements are conjugates of each other. DOS can always be factored into two distinct polynomials with rational coefficients, whereas PST has two same polynomial factors.

7 0
3 years ago
Other questions:
  • According to the diagram below, which similarity statements are true? Check all that apply. A. ABD ~ BCD B. ABD ~ ADC C. ABC ~ A
    12·1 answer
  • Write the decimal 0.237 as a percent.
    14·2 answers
  • I need some help with this
    6·2 answers
  • What is the surface area of this right circular cone?
    10·1 answer
  • How to find marginal profit function calculus?
    8·1 answer
  • Donald's Earnings, x (dollars) Fallons Earnings, y 38 45 43 50 48 55 53 60 58 65 Which equation best represents Fallon's earning
    15·1 answer
  • My question is asking me..."A sphere and a cylinder have the same radius and height. The volume of the cylinder is 18 centimeter
    7·1 answer
  • Abby has $20 in a savings account. The interest rate is 10% per year and is not compounded. How much will she have in 1 year​
    7·2 answers
  • A minor league pitcher gives up a hit on 20% of his pitches. How many hits does his give up after 10 pitches?
    6·1 answer
  • Help ..................
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!