<h2>
Greetings!</h2>
Answer:

Step-by-step explanation:
If 84% are fiction, then the fraction of these are simply the percentage over 100:

Simplified down by dividing by 4:

<h2>Hope this helps!</h2>
This is a Geometric sequence with first term 9.6 and common ratio -0.5.
an = an-1 *- 0.5
V =

r^2h/3
V = 3.14 x 4^2 x 6/3 (remember r is 1/2 of the diameter)
V = 3.14 x 16 x 2
V = 100.5
Surface Area of cylinder = 8195.4 inches^2
Step-by-step explanation:
we are given:
Diameter of cylinder = 30 inches
Height of cylinder = 72 inches
We need to find:
Surface area of cylinder = ?
The formula used is:

We know radius = diameter/2
so, radius = 30/2 = 15 inches
putting values:

So, Surface Area of cylinder = 8195.4 inches^2
Keywords: Surface Area of cylinder
Learn more about Surface Area of cylinder at:
#learnwithBrainly
Answer:
Throw this sample out and start over again with a better sampling method
Step-by-step explanation:
Biased sampling leads wrong results, since the sample doesn't represent the population which is aimed to be surveyed. Higher/lower confidence level or t distribution cannot correct it.
Confidence level gives the probability of rejecting null hypothesis while it is true. And t-interval is used when the sample size is small or population standard deviation is unknown.
Before choosing confidence level or type of the statistic to infer results, one must follow random sampling not biased.