3. Evaluate each function for the given value.
1 answer:
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Table-1 shows constant increase of X and Y values
Step-by-step explanation:
We are given two tables with X and Y values.
To find which table represent the constant increase of X and Y:
If there is constant increase of X and Y then, X and Y avlues belongs to equation of line.
Also, if three points lies on line then, slope of line made by three points must be same or equal.
Slope of line is given as s=
For table 1:
The values of X and Y form points as A(3,4),B(5,6) and C(7.8)
For A(3,4) and B(5,6)
s=
s=
s=1
For C(7.8) and B(5,6)
s=
s=
s=1
Therefore, Table-1 shows constant increase of X and Y values
For table 2:
The values of X and Y form points as A(1,3),B(2,6) and C(3,10)
For A(1,3) and B(2,6)
s=
s=
s=3
ForC(3,10) and B(5,6)
s=
s=
s=2
Therefore, Table-1 does not shows constant increase of X and Y values
Answer:
The minimum sample size required is 25 so that margin of error is no more than 3 minutes.
Step-by-step explanation:
We are given the following in the question:
Mean, μ = 42 minutes
Standard Deviation, σ = 9 minutes.
We want to build a 90% confidence interval such that margin of error is no more than 3 minutes.
Formula for margin of error:
Putting values, we get.
Thus, the minimum sample size required is 25 so that margin of error is no more than 3 minutes.