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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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The binomial probability distribution is used with _____.
The binomial probability distribution is used with _____.
The binomial probability distribution is used with _____.
 a. a continuous random variable
  b. a discrete random variable
  c. any distribution, as long as it is not normal
  d. All of the answers are correct.
infantryman1986   50   1 Reply
6 years ago
If you are conducting an experiment where the probability of a success is .02 and you are interested ...
If you are conducting an experiment where the probability of a success is .02 and you are interested ...
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 _____.
 a. standard normal probability density
koklok123   35   1 Reply
6 years ago
Four percent of the customers of a mortgage company default on their payments. A sample of five ...
Four percent of the customers of a mortgage company default on their payments. A sample of five ...
Four percent of the customers of a mortgage company default on their payments. A sample of five customers is selected. What is the probability that exactly two customers in the sample will default on their payments?
 a. .2592
  b. .0142
CTaustin   65   1 Reply
6 years ago
A production process produces 2 defective parts. A sample of five parts from the production process ...
A production process produces 2 defective parts. A sample of five parts from the production process ...
A production process produces 2 defective parts. A sample of five parts from the production process is selected. What is the probability that the sample contains exactly two defective parts?
 a. .0004
  b. .0038
  c. .10
  d. .02
love2211   66   1 Reply
6 years ago
The variance for the binomial probability distribution is _____.
The variance for the binomial probability distribution is _____.
The variance for the binomial probability distribution is _____.
 a. Var(x) = p(1  p)
  b. Var(x) = np
  c. Var(x) = n(1  p)
  d. Var(x) = np(1  p)
ejohnson3310   50   2 Replies
6 years ago
The standard deviation of a binomial distribution is _____.
The standard deviation of a binomial distribution is _____.
The standard deviation of a binomial distribution is _____.
 a. E(x) = pn(1  n)
  b. E(x) = np(1  p)
  c. E(x) = np
  d. None of the answers is correct.
KAtlold   37   1 Reply
6 years ago
Assume that you have a binomial experiment with p = 0.5 and a sample size of 100 . The expected ...
Assume that you have a binomial experiment with p = 0.5 and a sample size of 100 . The expected ...
Assume that you have a binomial experiment with p = 0.5 and a sample size of 100 . The expected value of this distribution is _____.
 a. 0.50
  b. 0.30
  c. 50
  d. Not enough information is given to answer this question.
Skoochy   44   1 Reply
6 years ago
Assume that you have a binomial experiment with p = 0.4 and a sample size of 50 . The variance of ...
Assume that you have a binomial experiment with p = 0.4 and a sample size of 50 . The variance of ...
Assume that you have a binomial experiment with p = 0.4 and a sample size of 50 . The variance of this distribution is _____.
 a. 20
  b. 12
  c. 3.46
  d. Not enough information is given to answer this question.
jldobro   44   1 Reply
6 years ago
Twenty percent of the students in a class of 100 are planning to go to graduate school. The standard ...
Twenty percent of the students in a class of 100 are planning to go to graduate school. The standard ...
Twenty percent of the students in a class of 100 are planning to go to graduate school. The standard deviation of this binomial distribution is _____.
 a. 20
  b. 16
  c. 4
  d. 2
k123p   40   1 Reply
6 years ago
The student body of a large university consists of 60 female students. A random sample of 8 students ...
The student body of a large university consists of 60 female students. A random sample of 8 students ...
The student body of a large university consists of 60 female students. A random sample of 8 students is selected. What is the random variable in this experiment?
 a. the 60 of female students
  b. the random sample of 8 students
  c.
zns889   66   1 Reply
6 years ago
The student body of a large university consists of 60 female students. A random sample of 8 students ...
The student body of a large university consists of 60 female students. A random sample of 8 students ...
The student body of a large university consists of 60 female students. A random sample of 8 students is selected. What is the probability that among the students in the sample exactly two are female?
 a. .0896
  b. .2936
  c. .0413
clcharleston   82   1 Reply
6 years ago
Forty percent of all registered voters in a national election are female. A random sample of 5 ...
Forty percent of all registered voters in a national election are female. A random sample of 5 ...
Forty percent of all registered voters in a national election are female. A random sample of 5 voters is selected. The probability that there are no females in the sample is _____.
 a. .0778
  b. .7780
  c. .5000
  d. .3456
Brutusandmoose   46   1 Reply
6 years ago
The probability Pete will catch fish when he goes fishing is .8 . Pete is going fishing 3 days next ...
The probability Pete will catch fish when he goes fishing is .8 . Pete is going fishing 3 days next ...
The probability Pete will catch fish when he goes fishing is .8 . Pete is going fishing 3 days next week. What is the random variable in this experiment?
 a. the .8 probability of catching fish
  b. the 3 days
  c. the number of days
kate lynn   55   1 Reply
6 years ago
The probability Pete will catch fish when he goes fishing is .8 . Pete is going fishing 3 days next ...
The probability Pete will catch fish when he goes fishing is .8 . Pete is going fishing 3 days next ...
The probability Pete will catch fish when he goes fishing is .8 . Pete is going fishing 3 days next week. The expected number of days Pete will catch fish is _____.
 a. .6
  b. .8
  c. 2.4
  d. 3
NERD   60   1 Reply
6 years ago
The probability Pete will catch fish when he goes fishing is .8 . Pete is going fishing 3 days next ...
The probability Pete will catch fish when he goes fishing is .8 . Pete is going fishing 3 days next ...
The probability Pete will catch fish when he goes fishing is .8 . Pete is going fishing 3 days next week. The variance of the number of days Pete will catch fish is _____.
 a. .16
  b. .48
  c. .8
  d. 2.4
Mserna19   52   2 Replies
6 years ago
The random variable x is the number of occurrences of an event over an interval of 10 minutes. It ...
The random variable x is the number of occurrences of an event over an interval of 10 minutes. It ...
The random variable x is the number of occurrences of an event over an interval of 10 minutes. It can be assumed the probability of an occurrence is the same in any two time periods of an equal length. It is known that the mean number of occurrences
ejohnson3310   31   1 Reply
6 years ago
The random variable x is the number of occurrences of an event over an interval of 10 minutes. It ...
The random variable x is the number of occurrences of an event over an interval of 10 minutes. It ...
The random variable x is the number of occurrences of an event over an interval of 10 minutes. It can be assumed the probability of an occurrence is the same in any two time periods of an equal length. It is known that the mean number of occurrences
escoba   28   1 Reply
6 years ago
The random variable x is the number of occurrences of an event over an interval of 10 minutes. It ...
The random variable x is the number of occurrences of an event over an interval of 10 minutes. It ...
The random variable x is the number of occurrences of an event over an interval of 10 minutes. It can be assumed the probability of an occurrence is the same in any two time periods of an equal length. It is known that the mean number of occurrences
RENCEE72   49   1 Reply
6 years ago
The Poisson probability distribution is a _____.
The Poisson probability distribution is a _____.
The Poisson probability distribution is a _____.
 a. continuous probability distribution
  b. discrete probability distribution
  c. uniform probability distribution
  d. normal probability distribution
Brutusandmoose   102   1 Reply
6 years ago
When dealing with the number of occurrences of an event over a specified interval of time or space ...
When dealing with the number of occurrences of an event over a specified interval of time or space ...
When dealing with the number of occurrences of an event over a specified interval of time or space and when the occurrence or nonoccurrence in any interval is independent of the occurrence or nonoccurrence in any other interval, the appropriate proba
alexisblack   43   2 Replies
6 years ago
Excel's POISSON.DIST function can be used to compute _____.
Excel's POISSON.DIST function can be used to compute _____.
Excel's POISSON.DIST function can be used to compute _____.
 a. bin width for histograms
  b. Poisson probabilities
  c. cumulative Poisson probabilities
  d. both Poisson probabilities and cumulative Poisson probabilities
k123p   80   1 Reply
6 years ago
Excel's POISSON.DIST function has how many inputs?
Excel's POISSON.DIST function has how many inputs?
Excel's POISSON.DIST function has how many inputs?
 a. 2
  b. 3
  c. 4
  d. 5
alexisblack   303   1 Reply
6 years ago
When using Excel's POISSON.DIST function, one should choose TRUE for the third input if _____.
When using Excel's POISSON.DIST function, one should choose TRUE for the third input if _____.
When using Excel's POISSON.DIST function, one should choose TRUE for the third input if _____.
 a. a probability is desired
  b. a cumulative probability is desired
  c. the expected value is desired
  d. the correct answer is de
Jbev757   155   1 Reply
6 years ago
When sampling without replacement, the probability of obtaining a certain sample is best given by a ...
When sampling without replacement, the probability of obtaining a certain sample is best given by a ...
When sampling without replacement, the probability of obtaining a certain sample is best given by a _____.
 a. hypergeometric distribution
  b. binomial distribution
  c. Poisson distribution
  d. normal distribution
kate lynn   82   1 Reply
6 years ago
The key difference between binomial and hypergeometric distributions is that with the hypergeometric ...
The key difference between binomial and hypergeometric distributions is that with the hypergeometric ...
The key difference between binomial and hypergeometric distributions is that with the hypergeometric distribution the _____.
 a. probability of success must be less than .5
  b. probability of success changes from trial to trial
  c.
NERD   45   1 Reply
6 years ago
Excel's HYPGEOM.DIST function has how many inputs?
Excel's HYPGEOM.DIST function has how many inputs?
Excel's HYPGEOM.DIST function has how many inputs?
 a. 2
  b. 3
  c. 4
  d. 5
browniels   348   2 Replies
6 years ago
The function used to compute the probability of x successes in n trials, when the trials are ...
The function used to compute the probability of x successes in n trials, when the trials are ...
The function used to compute the probability of x successes in n trials, when the trials are dependent, is the _____.
 a. binomial probability function
  b. Poisson probability function
  c. hypergeometric probability function
 
RENCEE72   47   2 Replies
6 years ago
The expected value of a random variable is the _____.
The expected value of a random variable is the _____.
The expected value of a random variable is the _____.
 a. most probable value
  b. simple average of all the possible values
  c. median value
  d. mean value
CTaustin   21   1 Reply
6 years ago
In a binomial experiment consisting of five trials, the number of different values that x (the ...
In a binomial experiment consisting of five trials, the number of different values that x (the ...
In a binomial experiment consisting of five trials, the number of different values that x (the number of successes) can assume is _____.
 a. 2
  b. 5
  c. 6
  d. 10
KAtlold   35   1 Reply
6 years ago
A binomial probability distribution with p = 0.3 is _____.
A binomial probability distribution with p = 0.3 is _____.
A binomial probability distribution with p = 0.3 is _____.
 a. negatively skewed
  b. symmetrical
  c. positively skewed
  d. bimodal
Mserna19   130   1 Reply
6 years ago
A property of the Poisson distribution is that the mean equals the _____.
A property of the Poisson distribution is that the mean equals the _____.
A property of the Poisson distribution is that the mean equals the _____.
 a. mode
  b. median
  c. variance
  d. standard deviation
KAtlold   85   1 Reply
6 years ago
Thirty-two percent of the students in a management class are graduate students. A random sample of 5 ...
Thirty-two percent of the students in a management class are graduate students. A random sample of 5 ...
Thirty-two percent of the students in a management class are graduate students. A random sample of 5 students is selected. Using the binomial probability function, determine the probability that the sample contains exactly 2 graduate students?
jprust87   92   1 Reply
6 years ago
A production process produces 2 defective parts. A sample of 5 parts from the production is ...
A production process produces 2 defective parts. A sample of 5 parts from the production is ...
A production process produces 2 defective parts. A sample of 5 parts from the production is selected. What is the probability that the sample contains exactly 2 defective parts? Use the binomial probability function and show your computations to answ
stroman54   62   1 Reply
6 years ago
When a machine is functioning properly, 80 of the items produced are non-defective. If 3 items are ...
When a machine is functioning properly, 80 of the items produced are non-defective. If 3 items are ...
When a machine is functioning properly, 80 of the items produced are non-defective. If 3 items are examined, what is the probability that 1 is defective? Use the binomial probability function to answer this question.
rgasio   64   1 Reply
6 years ago
Ten percent of the items produced by a machine are defective. Out of 15 items chosen at random, a . ...
Ten percent of the items produced by a machine are defective. Out of 15 items chosen at random, a . ...
Ten percent of the items produced by a machine are defective. Out of 15 items chosen at random, a . what is the probability that exactly 3 items will be defective? b. what is the probability that less than 3 items will be defective? c. what is the pr
fundai!   42   1 Reply
6 years ago
In a large university, 15 of the students are female. If a random sample of 20 students is selected, ...
In a large university, 15 of the students are female. If a random sample of 20 students is selected, ...
In a large university, 15 of the students are female. If a random sample of 20 students is selected, a . what is the probability that the sample contains exactly 4 female students? b. what is the probability that the sample will contain no female stu
RENCEE72   38   1 Reply
6 years ago
Twenty percent of the applications received for a position are rejected. What is the probability ...
Twenty percent of the applications received for a position are rejected. What is the probability ...
Twenty percent of the applications received for a position are rejected. What is the probability that among the next 14 applications, a . none will be rejected? b. all will be rejected? c. less than 2 will be rejected? d. more than 4 will be rejected
alexisblack   47   2 Replies
6 years ago
Two percent of the parts produced by a machine are defective. Forty parts are selected. Define the ...
Two percent of the parts produced by a machine are defective. Forty parts are selected. Define the ...
Two percent of the parts produced by a machine are defective. Forty parts are selected. Define the random variable x to be the number of defective parts. a . What is the probability that exactly 3 parts will be defective? b. What is the probability t
fundai!   54   1 Reply
6 years ago
A manufacturing company has 5 identical machines that produce nails. The probability that a machine ...
A manufacturing company has 5 identical machines that produce nails. The probability that a machine ...
A manufacturing company has 5 identical machines that produce nails. The probability that a machine will break down on any given day is .1 . Define a random variable x to be the number of machines that will break down in a day. a . What is the approp
Storm   50   1 Reply
6 years ago
A production process produces 90 non-defective parts. A sample of 10 parts from the production ...
A production process produces 90 non-defective parts. A sample of 10 parts from the production ...
A production process produces 90 non-defective parts. A sample of 10 parts from the production process is selected. a . Define the random variable in words for this experiment. b. What is the probability that the sample will contain 7 non-defective p
Mserna19   78   2 Replies
6 years ago
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