BUAL 2600 GRAMLING COMPREHENSIVE EXAMS
UPDATED QUESTIONS AND ANSWERS SURE A+
✔✔covariance - ✔✔what is the measure of the strength of the linear relationship
between 'x' and 'y' that is dependent on the units in which 'x' and 'y' are measured?
✔✔6/36 - ✔✔what is the probability of rolling a seven with a pair of fair dice?
✔✔0.5 - ✔✔what is the probability that an even number appears on the toss of a die?
✔✔complement - ✔✔the ________ of event X consists of all sample space outcomes
that do not correspond to the occurrence of event X
✔✔probability - ✔✔what is the measure of the chance that an uncertain event will
occur?
✔✔16 - ✔✔4 people will enter an automobile showroom, and each will either purchase
a car (P) or not purchase a car (N). how many sample spaces of all possible decisions
that could potentially be made by the people are there?
✔✔1/4 - ✔✔4 people will enter an automobile showroom, and each will either purchase
a car (P) or not purchase a car (N). what is the probability that exactly 3 people will
purchase a car?
, ✔✔11/16 - ✔✔4 people will enter an automobile showroom, and each will either
purchase a car (P) or not purchase a car (N). what is the probability that 2 or fewer
people will purchase a car?
✔✔15/16 - ✔✔4 people will enter an automobile showroom, and each will either
purchase a car (P) or not purchase a car (N). what is the probability that 1 or more
people will purchase a car?
✔✔2/16 - ✔✔4 people will enter an automobile showroom, and each will either
purchase a car (P) or not purchase a car (N). what is the probability that all 4 people will
make the same purchase decision?
✔✔random variable - ✔✔what type of variable assigns one and only one numerical
value to each experimental outcome?
✔✔discrete probability distribution - ✔✔a ________ ________ ________ is expressed
as a table, graph, or formula that gives the probability associated with each possible
value that the random variable can assume
✔✔binomial distribution - ✔✔the requirement that the probability of success remains
constant from trial to trial is a property of what type of distribution?
✔✔greater - ✔✔the area under the normal curve z=0 and z=1 is ________ than the
area under the normal curve between z=1 and z=2
✔✔uniform, normal, and exponential - ✔✔what are 3 continuous probability
distributions?
✔✔0 - ✔✔if [a,b] denotes an arbitrary interval of numbers on the real number line, find
the probability when P(x=a)
✔✔means - ✔✔the central limit theorem states that as the sample size increases, the
distribution of the sample ________ approaches the normal distribution
✔✔increases, decreases - ✔✔as the sample size ________, the variation of the
sampling distribution of the mean ________
✔✔np is greater than or equal to 5 and n(1-p) is greater than or equal to 5 - ✔✔the
population of all sample proportions has a normal distribution if the sample size (n) is
sufficiently large. the rule of thumb for ensuring that n is sufficiently large is...
✔✔increases, normal - ✔✔for non-normal populations, as the sample size (n)
________, the distribution of sample means approaches a ________ distribution
UPDATED QUESTIONS AND ANSWERS SURE A+
✔✔covariance - ✔✔what is the measure of the strength of the linear relationship
between 'x' and 'y' that is dependent on the units in which 'x' and 'y' are measured?
✔✔6/36 - ✔✔what is the probability of rolling a seven with a pair of fair dice?
✔✔0.5 - ✔✔what is the probability that an even number appears on the toss of a die?
✔✔complement - ✔✔the ________ of event X consists of all sample space outcomes
that do not correspond to the occurrence of event X
✔✔probability - ✔✔what is the measure of the chance that an uncertain event will
occur?
✔✔16 - ✔✔4 people will enter an automobile showroom, and each will either purchase
a car (P) or not purchase a car (N). how many sample spaces of all possible decisions
that could potentially be made by the people are there?
✔✔1/4 - ✔✔4 people will enter an automobile showroom, and each will either purchase
a car (P) or not purchase a car (N). what is the probability that exactly 3 people will
purchase a car?
, ✔✔11/16 - ✔✔4 people will enter an automobile showroom, and each will either
purchase a car (P) or not purchase a car (N). what is the probability that 2 or fewer
people will purchase a car?
✔✔15/16 - ✔✔4 people will enter an automobile showroom, and each will either
purchase a car (P) or not purchase a car (N). what is the probability that 1 or more
people will purchase a car?
✔✔2/16 - ✔✔4 people will enter an automobile showroom, and each will either
purchase a car (P) or not purchase a car (N). what is the probability that all 4 people will
make the same purchase decision?
✔✔random variable - ✔✔what type of variable assigns one and only one numerical
value to each experimental outcome?
✔✔discrete probability distribution - ✔✔a ________ ________ ________ is expressed
as a table, graph, or formula that gives the probability associated with each possible
value that the random variable can assume
✔✔binomial distribution - ✔✔the requirement that the probability of success remains
constant from trial to trial is a property of what type of distribution?
✔✔greater - ✔✔the area under the normal curve z=0 and z=1 is ________ than the
area under the normal curve between z=1 and z=2
✔✔uniform, normal, and exponential - ✔✔what are 3 continuous probability
distributions?
✔✔0 - ✔✔if [a,b] denotes an arbitrary interval of numbers on the real number line, find
the probability when P(x=a)
✔✔means - ✔✔the central limit theorem states that as the sample size increases, the
distribution of the sample ________ approaches the normal distribution
✔✔increases, decreases - ✔✔as the sample size ________, the variation of the
sampling distribution of the mean ________
✔✔np is greater than or equal to 5 and n(1-p) is greater than or equal to 5 - ✔✔the
population of all sample proportions has a normal distribution if the sample size (n) is
sufficiently large. the rule of thumb for ensuring that n is sufficiently large is...
✔✔increases, normal - ✔✔for non-normal populations, as the sample size (n)
________, the distribution of sample means approaches a ________ distribution
