1|Page
ECN 221 ASU EXAM -1 ||Verified Exam!!|| Most Recent
Exam Actual Complete Real Exam Questions And
Correct Answers (Verified Answers) Already Graded
A+ | Guaranteed Success!! Newest Exam!!!
The descriptive measure of dispersion that is based on the
concept of a deviation about the mean is _____. - Answer-
neither the range nor the interquartile range
How is coefficient of variation calculated? - Answer-
standard deviation/mean
How do you calculate z-score? - Answer-(value-
mean)/standard deviation
Of five letters (A, B, C, D, and E), two letters are to be
selected at random. How many possible selections are
there? - Answer-*10*
5!/(2!(5-2)!)
or
5C2
,2|Page
A(n) __________ is a collection of sample points. -
Answer-event
Three applications for admission to a local university are
checked to determine whether each applicant is male or
female. The number of sample points in this experiment is
_____. - Answer-*8*
2^3
The probability Pete will catch fish when he goes fishing is
.8. Pete is going fishing 3 days next week.
The probability that Pete will catch fish on 1 or fewer days
is _____. - Answer-.104
3C0(.8^0)(.2^3) + 3C1(.8^1)(.2^2)
If you are conducting an experiment where the probability
of a success is .02 and you are interested in the
probability of two successes in 15 trials, the correct
probability function to use is the _____. - Answer-binomial
probability function
The five-number summary consists of what five statistical
measures? - Answer-min, Q1, median, Q3, max
, 3|Page
The coefficient of variation indicates how large the
standard deviation is relative to the _____. - Answer-mean
Excel's _____ function can be used to compute the mean.
- Answer-average
Which of the following is a characteristic of an experiment
where the binomial probability distribution is applicable? -
Answer-The trails are *not* dependent
The probabilities of the outcomes do not change from one
trial to another.
Exactly two outcomes are possible on each trial.
The experiment has a sequence of n identical trials.
60.2% of the applications received for a credit card are
accepted. Among the next 14 applications, what is the
probability that 6 will be accepted? - Answer-0.089991
Sandy's Pet Center grooms large and small dogs. It takes
Sandy 30 minutes to groom a small dog and 70 minutes to
groom a large dog. Large dogs account for 40% of
Sandy's business. Sandy has 5 appointments tomorrow.
ECN 221 ASU EXAM -1 ||Verified Exam!!|| Most Recent
Exam Actual Complete Real Exam Questions And
Correct Answers (Verified Answers) Already Graded
A+ | Guaranteed Success!! Newest Exam!!!
The descriptive measure of dispersion that is based on the
concept of a deviation about the mean is _____. - Answer-
neither the range nor the interquartile range
How is coefficient of variation calculated? - Answer-
standard deviation/mean
How do you calculate z-score? - Answer-(value-
mean)/standard deviation
Of five letters (A, B, C, D, and E), two letters are to be
selected at random. How many possible selections are
there? - Answer-*10*
5!/(2!(5-2)!)
or
5C2
,2|Page
A(n) __________ is a collection of sample points. -
Answer-event
Three applications for admission to a local university are
checked to determine whether each applicant is male or
female. The number of sample points in this experiment is
_____. - Answer-*8*
2^3
The probability Pete will catch fish when he goes fishing is
.8. Pete is going fishing 3 days next week.
The probability that Pete will catch fish on 1 or fewer days
is _____. - Answer-.104
3C0(.8^0)(.2^3) + 3C1(.8^1)(.2^2)
If you are conducting an experiment where the probability
of a success is .02 and you are interested in the
probability of two successes in 15 trials, the correct
probability function to use is the _____. - Answer-binomial
probability function
The five-number summary consists of what five statistical
measures? - Answer-min, Q1, median, Q3, max
, 3|Page
The coefficient of variation indicates how large the
standard deviation is relative to the _____. - Answer-mean
Excel's _____ function can be used to compute the mean.
- Answer-average
Which of the following is a characteristic of an experiment
where the binomial probability distribution is applicable? -
Answer-The trails are *not* dependent
The probabilities of the outcomes do not change from one
trial to another.
Exactly two outcomes are possible on each trial.
The experiment has a sequence of n identical trials.
60.2% of the applications received for a credit card are
accepted. Among the next 14 applications, what is the
probability that 6 will be accepted? - Answer-0.089991
Sandy's Pet Center grooms large and small dogs. It takes
Sandy 30 minutes to groom a small dog and 70 minutes to
groom a large dog. Large dogs account for 40% of
Sandy's business. Sandy has 5 appointments tomorrow.
