Answer:
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Step-by-step explanation:
Answer:
The correct answer is 0.1
Step-by-step explanation:
We know the total no of ways in which 3 boys and 3 girls can be seated equals 6!
Now since we want all the 3 girls and the 3 boys to sit together
Let B1 , B2 , B3 be the boys and G1, G2, G3 be the boys and girls respectively
the no of ways to arrange boys = 3!
Similarly the number of ways to arrange girls = 3!
Thus the total no of ways to arrange both boys and girls = 3! x 3!
Thus the probability is given by
Answer:
The sampling technique used here is Stratified random sampling.
Step-by-step explanation:
Stratified random sampling is a sampling procedure where the researcher first divided the entire population into groups, known as strata. These groups are homogeneous in nature.
Then from these strata a simple random sample of individuals are selected.
In this case the Biologist first divide the entire region of Red foxes into various groups. Then he samples 100 female foxes from each of these groups.
This is an example of stratified sampling.
Thus, the sampling technique used here is Stratified random sampling.
Answer:
Katie is 6 years old and Thomas is 3 years old
Step-by-step explanation:
Given that we should let K and T be the current ages of two siblings, Katie and Thomas.
If Katie is currently twice the age of Thomas then,
K = 2T
and in 6 years, Katie will be 4 times Thomas's current age then
K + 6 = 4T
Solving both equations simultaneously by substituting the value of K given in the first equation into the second
2T + 6 = 4T
Collect like terms
6 = 4T - 2T
6 = 2T
Divide both sides by 2
T = 3
Recall that K = 2T
K = 2 * 3
= 6
Hence Katie is 6 years old while Thomas is 3 years old
Answer:
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Step-by-step explanation:
