What is the probability that a randomly selected person has

Question

Question 1. The table shows the probability distribution for the number of heads when four coins are tossed. What is the probability that no more than two heads show on a random toss?

X= number of heads	Probability p(x)
0	0.0625
1	0.25
2	0.375
3	0.25
4	0.0625

a) 0.3125
b) 0.375
c) 0.6875
d) 0.875

Question 2. On an algebra test, there are 7 students with As, 9 students with Bs, 11 students with Cs, 3 students with Ds, and 2 students with Fs. Find the probability that a randomly chosen student has D. Round to the nearest tenth of a percent.

a) 3%
b) 10.3%
c) 9.4%
d) 15.6%

Question 3. Which of the following could not be a probability distribution?

A)

Outcomes	Probability
1	0.1
2	0.15
3	0.25
4	0.5

B)

Outcomes	Probability
1	0.97
2	0.01
3	0.01
4	0.01

C)

Outcomes	Probability
1	0.32
2	0.42
3	0.25
4	0.1

D)

Outcomes	Probability
1	0.43
2	0.21
3	0.2
4	0.16

Question 4. Use the chart below. What is the probability that a randomly selected person has earned at least a bachelor's degree?

X = Level of Education	Probability
Some High School	0.154
High School Graduate	0.32
Some college	0.172
Associate's Degree	0.082
Bachelor's Degree	0.179
Advanced Degree	0.093

A) 0.179
B) 0.272
C) 0.728
D) 0.907

Question 5. Use the chart below. In a given week, what is the probability that more than 300 CD's sell?

Number of top 10 SDs Sold Each Week	0-100	101-200	201-300	301-400	401-500
Probability	0.1	0.15	0.4	0.25	0.1

a) 0.40
b) 0.25
c) 0.75
d) 0.35

Question 6. Use the chart below. If a person is randomly selected, what is the probability that he or she has completed at most some college?

X = Level of Education	Probability
Some High School	0.154
High School Graduate	0.32
Some college	0.172
Associate's Degree	0.082
Bachelor's Degree	0.179
Advanced Degree	0.093

a) 0.72
b) 0.474
c) 0.526
d) 0.646