Because when multiplying you add the number of variables, and there are 3 X's so it would be 6x with an exponent of 3
Answer:
(47.3, 54.1)
Step-by-step explanation:
We have that to find our
level, that is the subtraction of 1 by the confidence interval divided by 2. So:

Now, we have to find z in the Ztable as such z has a pvalue of
.
That is z with a pvalue of
, so Z = 1.96.
Now, find the margin of error M as such

In which
is the standard deviation of the population and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 50.7 - 3.4 = 47.3
The upper end of the interval is the sample mean added to M. So it is 50.7 + 3.4 = 54.1
The answer is (47.3, 54.1).
The trig function "sin" represents the opposite side / the hypotenuse. Therefore, sinC = c/a
Answer:
Isolate the variable by dividing each side by factors that don't contain the variable.
n = 8
Step-by-step explanation:
Have a nice day! I hope this helps!