PLEASE HELP!!! MATH!!!
2 answers:
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Given a table below which gives the years in A.D. for an archaeological excavation site using the method of tree ring dating:
Part A:
The sample mean is given by:
Therefore, the sample mean is 1268.
Part B:
We calculate the sample standard deviation as follows:
Part C:
The 90% confidence interval is given by:
Part A:
The sample mean is given by:
Therefore, the sample mean is 1268.
Part B:
We calculate the sample standard deviation as follows:
Part C:
The 90% confidence interval is given by:
1.
Consider a group of n objects. Assume we want to form groups of r, from these n objects.
There are in total
many ways of doing so.
where, r! is "r factorial", calculated as 1*2*3*...*(r-1)*r
2.
C(x, 2) is the total number of pairs out of x objects, that we can form.
so let the x objects represent the x teams, and 2, represent a group of 2, which means a game.
The total number of games is:
n(x)=2*C(x, 2) =
Remark, we multiplied by 2, since there will be 2 matches for each pair of teams.
Answer:
Consider a group of n objects. Assume we want to form groups of r, from these n objects.
There are in total
where, r! is "r factorial", calculated as 1*2*3*...*(r-1)*r
2.
C(x, 2) is the total number of pairs out of x objects, that we can form.
so let the x objects represent the x teams, and 2, represent a group of 2, which means a game.
The total number of games is:
n(x)=2*C(x, 2) =
Remark, we multiplied by 2, since there will be 2 matches for each pair of teams.
Answer:
Answer:
A
Step-by-step explanation:
We know that .
We also know that .
We can combine these facts to get .
So, the answer is and we're done!
<em>Note: the non-negative part or the equation comes from the fact that you assume the square root of a negative number doesn't exist. You will change this assumption later in the year, or in further years.</em>