Answer:
$58.80
Step-by-step explanation:
Area = Length * Width square frame length & width will be the same
√196 = 14 inches
196 = 14 * 14
196 = 196
14 inches * 4 sides = 56 inches total needed for frame
Cost:
56 inches * $1.05 = $58.80
Answer:
The correct answer is 0.541, however it isn't a choice you provided, hope that is still able to help you in some way!
To find the area of a circle find the radius and square it then multiply by PI
Area = PI x r^2
Area of a circle = 3.14 x r^2
=3.14 x 8.5^2
= 226.865
Answer:
The test statistic is
Step-by-step explanation:
We are interested in determining whether or not the proportion of the student who experience anxiety during the exam is significantly more than 80%.
At the null hypothesis, we test if the proportion is 80%, that is:
At the alternate hypothesis, we test if the proportion is more than 80%, that is:
The test statistic is:
In which X is the sample mean, is the value tested at the null hypothesis, is the standard deviation and n is the size of the sample.
80% is tested at the null hypothesis:
This means that
A random sample of 100 students was taken. Eighty-five of the student in the sample experienced anxiety during the exam.
This means that
The test statistic is
The test statistic is