1.
Susan forgot to study for her economics quiz. She guessed on all five true/false questions. Does this situation represent a binomial experiment?
A.
Yes, because each trial has exactly two outcomes; the probability of each trial is
; there are five trials and these are independent.
B.
Yes, because the questions are dependent and mutually inclusive.
C.
Yes, because the answer is right or wrong.
D.
Yes, because the trials are selected at random.
Hint
2.
While watching a television quiz show, Lou guessed on the 10 true/false questions. What is the probability of his getting 6 questions correct and 4 questions wrong?
A.
or about 0.205
B.
or about 0.3048
C.
or about 0.1770
D.
210
Hint
3.
An article in the Gazette reported that about 1 out of 4 cars sold in 1980 was red. Suppose a salesperson sells 6 cars per week. What is the probability that he or she sells at least 4 red cars in a week?
A.
or about 0.9624
B.
or about 0.0376
C.
or about 0.1318
D.
or about 0.0330
Hint
4.
The probability of a basketball player making a free throw during the regular season is
. During a championship game, this player made two out of three attempts. Based on his regular season record, what was the probability of making two out of three attempts?
A.
or about 0.2778
B.
or about 0.3472
C.
or about 0.6944
D.
or about 0.1389
Hint
5.
As a captain of his football team, Julian called the coin toss for 6 football games. What is the probability that he won the coin toss 4 times and lost 2 times?
A.
or about 0.4688
B.
or about 0.9375
C.
or about 0.0586
D.
or about 0.2344
Hint