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1. What is the 5 number summary from the following set of data? -8, -2, 0, 1, 5, 8, 11
2. What does a correlation coefficient (r) of -.85 indicate about the direction and strength of a linear relationship between two variables?
3. You are conducting a survey at your school, and randomly determine to survey every 10th student that walks into the cafeteria. What type of sampling method did you use?
4. Solve for x: 7x^{2} + 3x - 4 = 0
5. Solve the linear system of equations: -2x + 3y = 2
-4x - y = -24
6. Solve for the center and radius of the circle: x^{2} + y^{2} - 8x + 10y + 5 = 0
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Source: Rachel Bedo
if we have a sample of 100 animals ,in which 90 likes meat ,then standard deviation make sense or not?
Suppose you are testing if the mean size of a part is less than 16.0 mm using a significance level of 5%. In a sample of 180 parts has an average of 14 with standard deviation 13.
What is the appropriate null and alternate hypothesis
A bond analyst is analyzing the interest rates for equivalent municipal bonds issued in different states. At a = 0.05, is there enough evidence to conclude that there is a difference in the interest rates paid by the two states.
State A State B
Sample 60 70
Mean interest rate % 3.6 3.5
Population variance 0.03 0.03
Answer choices; No. test value 1.08 is inside critical region
Yes test value 3.28 is outside critical region
No. test value 0.01 is inside the critical region
what is the equation of the a linear function whose graph passes through (-1,6) and (6,0)
The approach that is used for analyzing decision trees is called
Question 13 options:
maximax
maximin
Laplace
expected monetary value
person A assembled the bike within 8 hours and person B work it in 6 hours..if they will work together how long they can finish the job???
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