Give the probability distribution and sketch the histogram.At a supermarket during the 6 p.m. rush, the manager counted the number of customers waiting in each of the 12 checkout lines. The results are shown in the table.
A. 
| Probability: | .17 | .08 | .33 | .25 | 0 | .17 |
B.
| Probability: | .16 | 0 | .25 | .33 | .10 | .16 |
C.
| Probability: | .16 | .10 | .33 | .25 | 0 | .16 |
D.
| Probability: | .17 | 0 | .25 | .33 | .08 | .17 |
Answer: A
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Identify the type of sampling described by the proposal.Every fifth adult entering an airport is checked for extra security screening.
A. systematic sample B. convenience sample C. stratified sample D. cluster sample E. simple random sample
Solve the problem.The perimeter of a rectangle is 64 m. If the width were doubled and the length were increased by 5 m, the perimeter would be 100 m. What are the length and width of the rectangle?
A. Length: 19 m; width: 13 m B. Length: 16 m; width: 11 m C. Length: 13 m; width: 19 m D. Length: 16 m; width: 16 m
Determine whether the expression is a polynomial.
A. Yes B. No
For the polynomial, list each real zero and its multiplicity. Determine whether the graph crosses or touches the x-axis at each x -intercept.f(x) = 2(x2 + 1)(x2 + 6)2
A. -1, multiplicity 1, touches x-axis; -6, multiplicity 2, crosses x-axis
B. No real zeros
C. 1, multiplicity 1, crosses x-axis; -1, multiplicity 1, crosses x-axis;
, multiplicity 2, touches x-axis; -
, multiplicity 2, touches x-axis
D. -1, multiplicity 1, crosses x-axis; -6, multiplicity 2, touches x-axis