The complement of 4 heads in the toss of 4 coins is (Please explain)! Thanks!
Exactly one tail
At least one tail
All tails
Three heads
Answers
By using sample space we can say that complement of 4 heads in the toss of 4 coins is at least one tail .
What is sample space ?
set of all possible outcomes experiment is called sample space .
To find compliment of 4 heads we will first find sample space Sample space= S
= { HHHH, HHHT, HHTH, HHTT, HTHH, HTHT, HTTH, HTTT, THHH, THHT, THTH, THTT TTHH, TTHT, TTTH, TTTT }
Given case is 4 heads Say A= { HHHH}
Now we can calculate A complement as
A' = S-A
= { HHHH, HHHT, HHTH, HHTT, HTHH, HTHT, HTTH, HTTT, THHH, THHT, THTH, THTT TTHH, TTHT, TTTH,TTTT }- { HHHH}A'={ HHHT, HHTH, HHTT, HTHH, HTHT, HTTH, HTTT, THHH, THHT, THTH, THTT TTHH, TTHT, TTTH,TTTT }
By using sample space we can say that complement of 4 heads in the toss of 4 coins is at least one tail .
To know more about sample space visit : brainly.com/question/5750471
Answer:
b i believe the answer is
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In order to maximize the chances that experimental groups represent the population of interest, researchers should conduct random sampling and random group assignment
Explanation:
The terms Random sampling and Random group assignment are greatly different in process of the sample selection. The study related to the determination of how sample participants can be drawn from the population refers to the process of Random sampling. The sample participants are subjected to a treatment by the usage of a random procedure comprises the Random group assignment.
When a researcher wants validate externally then random selection can be used. When a researcher wants to determine the effects of treatment within that group which is known as determination of internal validity then he can opt for Random group assignment.
Answer:
In order to maximize the chances that experimental groups represent the population of interest, researchers should conduct random sampling/random group assignment.
Explanation:
Random selection is a representation of the sample of people for your research from a community. Random assignment is the assigning of the sample that describes various groups or operations in the study.
Reasons:
- Random sampling enables us to get a sample representative of the community.
- Random assignment enables us to make positive that the only distinction among the various treatment combinations is what needs to study.
- Random assignment is crucial for sound empirical design. With adequately large representations, random assignment performs it unlikely that there are methodical variations among the groups.
Thus we can say in order to maximize the chances that experimental groups represent the population of interest, researchers should conduct random sampling/random group assignment.
To learn more about random sampling/random group assignment, refer:
(n + 7)(n - 2)
Answers
n(n - 2) + 7(n - 2)
n^2 - 2n + 7n - 14
n^2 + 5n - 14
Answer:
n^2 + 14n + 49
Step-by-step explanation:
Answers
If a caterer charges a fixed cost for preparing a dinner plus an additional cost for each person served. You know that the cost for 100 students will be $750 and the cost for 150 students will be $1050. find the caterers fixed cost and the cost per student served.
Answers
The fixed cost is $150, while the per-student cost is $6.
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pound of peanuts equally. What fraction of a pound of peanuts does each person receive? Enter your answer in simplest form.
Answers
Answer:
1/8 lb
Step-by-step explanation:
Each person gets 1/6 of the total amount, so ...
(1/6)(3/4 lb) = 3/24 lb = 1/8 lb
Each person gets 1/8 pound of peanuts.
Answers
I suppose the function is y=3√(6x+42)
==>6x+42>=0 (it must be a square root of a positive)
==>6x>=-42
==>x>=-42/6
==>x>=-7
ANSWER D