State whether you think the difference between what occurred and what you would expect by chance is statistically significant.In eighteen of the last twenty years the annual precipitation in a certain region has been less than in the previous year.
A. Statistically significant
B. Not statistically significant
Answer: A
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Solve the problem.The following list of digits was taken from a table of random numbers. We will let each set of 5 represent a family of five children. If a digit is 0 - 4 it will be a girl and the digit 5 - 9 will be a boy. Use this simulation to estimate the probability that a family of five children will have less than 2 boys.1872894741320630496354859155927135728152117321717389555755200888295295728953889458070773711019494917643369510390740035776259952052240040384511507452332751033761865636172939087480615941279969113392706727324727232240686253264092997095877709759912916866
A. 
B. None of these
C. 
D. 
Find the exact value under the given conditions.sin ? = - 
, 
< ? < 2?; cos ? = - 
, ? < ? < 
Find sin (? - ?).
A. 
B. 
C. 
D. 
Use a method of your choice to solve the equation.
= 6
A. x = - 
or x = 
B. x = 
or x = 
C. x = 1 or x = 13
D. x = - 
or x = 
Add.13 + -19 + 2
A. 8
B. 4
C. 
D. 