Answer:
The probability that between 79% and 81%of the 500 sampled wildlife watchers actively observed mammals in 2011 is P=0.412.
Step-by-step explanation:
We know the population proportion π=0.8, according to the 2011 National Survey of Fishing, Hunting, and Wildlife-Associated Recreation.
If we take a sample from this population, and assuming the proportion is correct, it is expected that the sample's proportion to be equal to the population's proportion.
The standard deviation of the sample is equal to:
With the mean and the standard deviaion of the sample, we can calculate the z-value for 0.79 and 0.81:
Then, the probability that between 79% and 81%of the 500 sampled wildlife watchers actively observed mammals in 2011 is:
Answer:
5x9.2x3.4=156.4
Step-by-step explanation:
plug in 9.2 for x and 3.4 for y then multiply
Answer:
222 miles.
Step-by-step explanation:
<u>Lets create an equation to solve this easier.</u>
<u>Let x represent the miles driven in the truck. </u>
Our equation is 238.51=.98x+20.95
All we have to do now is solve for x.
Subtract 20.95 on both sides.
217.56=.98x
Now divide both sides by .98 to isolate the variable.
222=x
<em>Ivan drove the truck 222 miles.</em>
Hope this helps!
Answer:
You mean improper fraction?
3 x 8 = 24
24 + 3 = 27
27/8
Answer:
40%
Step-by-step explanation:
The probability of the arrow landing on the green section is a 40% chance
This is because there are only 3 sections where one is 50 and the other is 10
To find the green we can create an equation, where x = green section
50 + 10 + x = 100
The equation equals 100 because that's the highest the percentage will go in probability, unless we were told otherwise
60 + x = 100
x = 100 - 60
x = 40
