Answer:
A one-sample t-interval for a population mean
Step-by-step explanation:
As the question is "How many minutes per day, on average, do you spend visiting social media sites?", the answer will be in a numerical form (number of hours, positive integer or real number).
As this is not a proportion, the option "A one-sample t-interval for a population mean" is discarded.
As the study does not defined another variable to compare in pairs, it is not a matched-pairs test. Option "A matched-pairs t -interval for a mean difference" discarded.
There are not two means in the study, so there is no "difference between means" variable. Options "A two-sample z-interval for a difference between proportions" and "A two-sample t-interval for a difference between means".
This should be a one-sample t-interval for a population mean, as there is only one sample, one population mean and the population standard deviation is not known.
Answer:
Step-by-step explanation:
see the attached figure to better understand the problem
Remember that
An isosceles triangle has two equal sides and two equal interior angles
In the isosceles triangle ABC
Applying the Pythagorean Theorem
Let
b ----> the length of the tents base
simplify
This uses the concept of proportions.
.002 converted to a fraction is 2/1000, or 1/500.
We set up the proportion like so:
10/100 = .002/x
Solve for x.
Cross-multiply.
10 * x = .002 * 100
10 * x = .2
x = .2 / 10
x = .02
The answer is .02
Answer:
The dimensions of the rectangular prism is 5 inches by 7 inches by 8 inches. Volume of the rectangular prism is expressed as
Length of the base × width of the base × height of the prism.
Volume = 5×7×8 = 280 inches ^2
Each golf ball has the shape of a sphere. The volume of a sphere is expressed as
Volume of sphere = 4/3πr^3
The golf ball has a diameter of 1.7 inches. It means that the radius of the golf ball is 1.7/2 = 0.85
Volume of each golf ball = 4/3 × 3.14×0.85^3
= 2.57 inches^3
The number of golf balls that will fit into the compartment would be
Volume if compartment/ volume of each golf ball. It becomes
280/2.57 = 109 golf balls
Step-by-step explanation:
