Answer:
B. 61%
Step-by-step explanation:
When we have the standard deviation of a sample, we use the t-distribution.
The width of an interval is related to the margin of error, which is given by the following equation:
M = T*s
In which T is related to the confidence level(and the sample size) and s is the standard deviation of the sample. Higher confidence levels have higher values of T.
A higher margin of error means that the interval is wider. To have a higher margin of error, we desire a higher value of T, which is achieved with a higher confidence level.
So the correct answer is:
B. 61%
It is 22 cuz 5 * 2 is 10 and 10 * 2 IS 20 + 2=22
ANSWER
False
EXPLANATION
The tangent function has no amplitude because it is not bounded.
The given tangent function is
This is of the form
f(t)=a tan(bt)
The period is given by
The first statement is true but the second is false.
Hence the whole statement is false.
The anwser to the problem is C.
