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Scilla [17]
3 years ago
13

As part of a college literature course, students must select three classic works of literature from the provided list and comple

te critical book reviews for each selected work. Write a short description of the processes that can be used to generate a simple random sample of three books. Obtain a simple random sample of size 3 from this list Click the icon to view the classic works list. Which of the following would produce a simple random sample? Select all that apply.
A. Ask someone their opinion on which three books are best, and select those three
B. List each book on a separate piece of paper, place them all in a hat, and pick three
C. List the names in alphabetical order and take the first three on the list.
D. Number the books from 1 to 9 and use a random number table to produce 3 different one digit numbers corresponding to the books selected
Mathematics
2 answers:
monitta3 years ago
8 0

Answer:

B. List each book on a separate piece of paper, place them all in a hat, and pick three

D. Number the books from 1 to 9 and use a random number table to produce 3 different one digit numbers corresponding to the books selected

Step-by-step explanation:

A simple random sample is a subset of a statistical population where every member has an equal chance of being selected.For example in a company with 500 workers, names of 100 workers can be selected from a hat containing the names of 500 workers.

Marat540 [252]3 years ago
5 0

Answer:

B. List each book on a separate piece of paper, place them all in a hat, and pick three

D. Number the books from 1 to 9 and use a random number table to produce 3 different one digit numbers corresponding to the books selected

Step-by-step explanation:

In Simple random sampling each unit has equal chance of being selected in sample.

In Option A and C selection of book is not random, Also each book has not have equal chance of selection. Thus, they would not produce a simple random sample.

Thus, Only Option B and D are correct.

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Arrange the pairs of points in increasing order of slopes of the lines joining them
sladkih [1.3K]

Answer:

(27,2) and (243,18)

(63,9) and (84,12)

(45,15) and (60,20)

(27,12) and (72,32)

(15,30) and (20,40)

(12,32) and (18,48)

(18,63) and (24,84)

Step-by-step explanation:

Formula for slope of a line is

m=\dfrac{y_2-y_1}{x_2-x_1}

a) (15,30) and (20,40).

m_a=\dfrac{40-30}{20-15}=\dfrac{10}{5}=2

Similarly find the slope of other lines.

b) (12,32) and (18,48).

m_b=\dfrac{48-32}{18-12}=\dfrac{16}{6}=2.67

c) (27,12) and (72,32).

m_c=\dfrac{32-12}{72-27}=\dfrac{20}{45}=0.44

d) (45,15) and (60,20).

m_d=\dfrac{20-15}{60-45}=\dfrac{5}{15}=0.33

e) (27,2) and (243,18).

m_e=\dfrac{18-2}{243-27}=\dfrac{16}{216}=0.074

f) (18,63) and (24,84).

m_f=\dfrac{84-63}{24-18}=\dfrac{21}{6}=3.5

g) (63,9) and (84,12).

m_g=\dfrac{12-9}{84-63}=\dfrac{3}{21}=0.143

After arranging the slopes in increasing order, we get

m_e

So, required arrangement of ordered pairs is

(27,2) and (243,18)

(63,9) and (84,12)

(45,15) and (60,20)

(27,12) and (72,32)

(15,30) and (20,40)

(12,32) and (18,48)

(18,63) and (24,84)

7 0
3 years ago
A spherical hot-air balloon has a diameter of 55 feet. When the balloon is inflated, the radius increases at a rate of 1.5 feet
abruzzese [7]

Answer:

The time it would take to inflate the balloon to approximately two-thirds of its maximum volume is approximately 46.90 minutes

Step-by-step explanation:

The given parameters are;

The diameter of  the balloon  = 55 feet

The rate of increase of the radius of the balloon when inflated = 1.5 feet per minute

We have;

dr/dt = 1.5 feet per minute = 1.5 ft/min

V = 4/3·π·r³

The maximum volume of the balloon = 4/3 × 3.14 × 55³ = 696556.67 ft³

When the volume is two-thirds the maximum volume, we have;

2/3 × 696556.67 ft³ = 464371.11 ft³

The value of the radius, r₂ at that point is found as follows;

4/3·π·r₂³ = 464371.11 ft³

r₂³ = 464371.11 ft³ × 3/4 = 348278.33 ft³

348278.333333

r₂ = ∛(348278.33 ft³) ≈ 70.36 ft

The time for the radius to increase to the above length = Length/(Rate of increase of length of the radius)

The time for the radius to increase to the above length ≈ 70.369 ft/(1.5 ft/min) ≈ 46.90 minutes

The time it would take to inflate the balloon to approximately two-thirds of its maximum volume ≈ 46.90 minutes.

4 0
3 years ago
The opposite corners of a quadrilateral are right angles. The quadrilateral is not a rhombus. What kind of quadrilateral is this
tatiyna
A rhombus is a 4 sided shape with equal lengths. Even though it has equal lengths, it has opposite sides that are parallel, and angles that are equal. It also has diaginols (dashed lines) meat in the middle
8 0
3 years ago
How do I create a radical equation with an extraneous solution quickly? How do I go the same for a radical equation with a non-e
Step2247 [10]

Answer:

why r u wafflin

Step-by-step explanation:

5 0
3 years ago
Between 2005 and 2008, the average rate of inflation was about3.4 per year. If a cart of groceries cost $140 in 2005, what did i
Elan Coil [88]
The formula is
A=p (1+r)^t
A future value?
P current value 140
R rate of inflation 0.034
T time 2008-2005=3 years
A=140×(1+0.034)^(3)
A=154.77 round your answer to get
A=155
3 0
3 years ago
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