Assume that a sample of bivariate data yields the correlation coefficient, r, indicated. Use the critical values table for the specified sample size and level of significance to determine whether a linear correlation exists.r = 0.291 when n = 82 at ? = 0.01
A. Yes
B. No
Answer: A
Mathematics
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Find a Cartesian equation for the line whose polar equation is given.r cos
= 3
A. y = 
x - 3
B. y = 
x + 6
C. y = 
x + 6
D. y = 
x + 3
Mathematics
Sketch the indicated line.During the month of January 2005, the depth, d, of snow in inches at the base of one ski resort could be approximated by 
where t is the number of days since December 31st. Sketch the graph.
What will be an ideal response?
Mathematics
Solve the problem.A twelve-sided die is rolled twice. In how many ways can this happen?
A. 144 ways B. 154 ways C. 24 ways D. 288 ways
Mathematics
A recursion formula and the initial term(s) of a sequence are given. Write out the first five terms of the sequence.a1 = 1, a2 = 3, an+2 = an+1 + an
A. 1, 3, 4, 7, 11 B. 1, 1, 2, 3, 5 C. 1, 3, 4, 8, 12 D. 1, 3, 4, 5, 6
Mathematics