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a_sh-v [17]
3 years ago
8

At a local community college, five statistics classes are randomly selected and all of the students from each class are intervie

wed.
What sampling technique is used?

A. convenience
B. systematic
C. random
D. cluster
E. stratified
Mathematics
1 answer:
Vilka [71]3 years ago
8 0

Answer:

D. cluster

Step-by-step explanation:

Convenience: Based on availability.

Systematic: The first element is sorted randomly, then the others follow a pattern.

Random: Each member of a sample has the same probability of being sorted.

Cluster: Each group is cluster, and when a cluster is sorted, every member of the group is sample. This is the correct answer.

Stratified: Population is divided into groups and then members from these groups are sorted.

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adelina 88 [10]

Answer:

Step-by-step explanation:

21

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3 years ago
HELP ME PLEASE…….Which table represents a function that does not have a constant rate of change ?
pentagon [3]
<h3>Answer:  Choice B</h3>

Explanation:

Notice that the jump from y = 9 to y = 10 is +1

But the jump from y = 10 to y = 12 is +2

This is sufficient info to say that the rate of change is <u>not</u> constant. The change in y must be the same.

If you were to plot these points on the same xy grid, then you could see that it's impossible to draw a straight line through all four points.

See below.

8 0
1 year ago
If a variable has a distribution that is​ bell-shaped with mean 28 and standard deviation 5​, then according to the Empirical​ R
mars1129 [50]

Answer:

99.7% data lies between 13 to 43

Step-by-step explanation:

Mean:  \mu = 28

Standard deviation : \sigma = 5

68% of data lies between \mu - \sigma to \mu +\sigma

95% of the data lies between \mu - 2\sigma to \mu +2\sigma

99.7% data lies between  \mu - 3\sigma to \mu +3\sigma

We are supposed to find  99.7 of the data will lie between which​ values

99.7% data lies between  28 - 3(5) to 28 +3(5)

99.7% data lies between  13 to 43

Hence 99.7% data lies between 13 to 43

8 0
3 years ago
I forgot how to do solve for area
Crank
Base×Height = Area
So put (2x-6)(x+3) which equals
2x^2+6x-6x-18
Combine like terms=
2x^3-18
Simplify by diving each term by 2 since both terms have factors of 2.
Final Answer = x^2-9
4 0
3 years ago
Read 2 more answers
A prism can hold 45 gallons of water. How many gallons of water can a pyramid with the same base and height hold?
boyakko [2]

Answer:

15 gallons

Step-by-step explanation:

we know that

The volume of a prism is equal to

V=Bh

where

B is the area of the base

h is the height

we have

Bh=45\ gal ----> equation A

The volume of the cone with the same base and height is equal to

V=\frac{1}{3}Bh

substitute equation A in the volume of the cone

V=\frac{1}{3}(45)=15\ gal

5 0
3 years ago
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