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Consider the students in your statistics class as the population and suppose they are seated in four rows of 10 students each. To select a sample, toss a coin. If it comes up heads, you use the 20 students sitting in the first two rows as your sample. If it comes up tails, you use the 20 students sitting in the last two rows as your sample.
Does every student have an equal chance of being selected for the sample? Explain.
Is it possible to include students sitting in row 3 with students sitting in row 2 in your sample?
Is your sample a simple random sample? Explain.
Describe a process you could use to get a simple random sample of size 20 from a class of size 40.
significance testing of correlation coefficient.a data set of size 19 has correlation coefficient ofnbsprnbsp
How many possible uniforms are there using one helmet, one jersey, and one pair of pants?
A balloon rises at a rate of 4 meters per second from a point on the ground 50 meters from an observer. Find the rate of change of the angle of elevation of the balloon from the observer when the balloon is 50 meters above the ground.
The material for the top and bottom cost cents per square cm and the material for the side costs 1 cent per square cm. What dimensions should it have so as to minimize the cost of the materials?
What velocity should the bird have (speed is the same) so that the temperature around the bird increase as fast as possible? What is the rate of change of the temperature?
An airplane is flying in still air with an airspeed of 475 miles per hour. If it is climbing at an angle of 25°, find the rate at which it is gaining altitude. (Round answer to four decimal places.)
Prove using mathematical induction.
Solve the questions on graphical representation of linear equations. Show all of your work and plot the graphs using the EZGraph tool.
a hotel wants to investigate a pattern for the number of guests arriving per hour on weekends. What distribution is used to find probability?
Continental charges $20/day and 50 cents per mile. How many miles must you drive in a day to make Basic a better deal than continental.
If we graph this data with Total Cost on the Y axis (Vertical axis) and the Quantity Produced on the X axis (Horizontal axis) what do you think will be the shape of the line
Using the following integral and the facts that v(t) = x'(t) at time t of an object moving along the x axis is given, along with the initial position x(0) of the object. Answer the questions a - c.
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