Htake Test MC11 Test Information Description Instructions Mu
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Take Test: MC11 Test Information Description Instructions Multiple Attempts Not allowed. This test can only be taken once. Force Completion This test can be saved and resumed later. Question Completion Status: Save All Answers Save and Submit Horatio Oscar Vineeth Lane (HOV Lane for short) records his commute times for a period of one month and assigned them to five different categories as shown in the table. What is the probability that Mr. Lane makes it home in under thirty minutes? .15 .35 .20 .55
For the normal distribution, the mean plus and minus 1.96 standard deviations will include what percent of the observations? 84%
If we know that the length of time it takes a college student to find a parking spot in the library parking lot follows a normal distribution with a mean of 3.5 minutes and a standard deviation of 1 minute, find the probability that a randomly selected college student will find a parking spot in the library parking lot in less than 3 minutes. 0.3551 0.3085 0.2674 0.1915
Under the normal curve, the area between z = 1 and z = 2 includes approximately ________ of the values. 98% 95% 85% 82%
For some positive value of Z, the probability that a standard normal variable is between 0 and Z is 0.3554. The value of Z is: 0.31 0.36 0.95 1.06
________ is a measure of the dispersion of random variable values about the expected value or mean. Standard deviation Sample mean Population mean Expected value
The area under the normal curve represents probability, and the total area under the curve sums to: 1
In a given experiment the probabilities of mutually exclusive events sum to: 1
Jim is considering pursuing an MS in Information Systems degree. He has applied to two different universities. The acceptance rate for applicants with similar qualifications is 20% for University X and 45% for University Y. What is the probability that Jim will be accepted at both universities? .09
Bayesian analysis involves a(n) ________ probability. a priori posterior joint relative frequency
The ________ and variance are derived from a subset of the population data and are used to make inferences about the population. sample mean
A professor would like to assign grades such that 7% of students receive Fs. If the exam average is 62 with a standard deviation of 13, what grade should be the cutoff for an F? (Round your answer.)
In a ________ distribution, for each of n trials, the event always has the same probability of occurring. binomial
Horatio Oscar Vineeth Lane (HOV Lane for short) records his commute times for a period of one month and assigned them to five different categories as shown in the table. Which of these events are mutually exclusive? The duration of Mr. Lane's commute is less than expected; Mr. Lane's commute is between twenty and thirty minutes. Mr. Lane's commute is longer than 30 minutes; Mr. Lane's commute is longer than 40 minutes. Mr Lane's commute is between ten and forty minutes; Mr. Lane's commute is between twenty and thirty minutes. Mr. Lane's commute takes less than ten minutes; Mr Lane's commute exceeds his expected commute.
Employees of a local company are classified according to gender and job type. The following table summarizes the number of people in each job category. If an employee is selected at random, what is the probability that the employee is female or works as a member of the administration?
________ techniques assume that no uncertainty exists in model parameters. Deterministic
Horatio Oscar Vineeth Lane (HOV Lane for short) records his commute times for a period of one month and assigned them to five different categories as shown in the table. What is the duration of Mr. Lane's expected commute? 27.25 minutes
The probability of independent events occurring in succession is computed by ________ the probabilities of each event. multiplying
Jim is considering pursuing an MS in Information Systems degree. He has applied to two different universities. The acceptance rate for applicants with similar qualifications is 20% for University X and 45% for University Y. What is the probability that Jim will not be accepted at either university? .30
.36 .44 .56 Assume that it takes a college student an average of 5 minutes to find a parking spot in the main parking lot. Assume also that this time is normally distributed with a standard deviation of 2 minutes. What time is exceeded by approximately 75% of the college students when trying to find a parking spot in the main parking lot? 5.75 minutes
The weight of a jar of jelly is normally distributed with a mean of 16 oz and a standard deviation of 0.02 oz. What is the probability that a jar of jelly contains more than 16.03 oz? .0668
A ________ probability is the altered marginal probability of an event based on additional information. posterior
For some value of Z, the probability that a standard normal variable is below Z is: 0.3783. The value of Z is: 0.81
Assume that it takes a college student an average of 5 minutes to find a parking spot in the main parking lot. Assume also that this time is normally distributed with a standard deviation of 2 minutes. Find the probability that a randomly selected college student will take between 2 and 6 minutes to find a parking spot in the main parking lot. 0.6247
A company markets educational software products and is ready to place three new products on the market. Past experience has shown that for this particular software, the chance of "success" is 80%. Assume that the probability of success is independent for each product. What is the probability that exactly 1 of the 3 products is successful? 0.096
Horatio Oscar Vineeth Lane (HOV Lane for short) records his commute times for a period of one month and assigned them to five different categories as shown in the table. What kind of probability is demonstrated if Mr. Lane is asked to predict the duration of his next commute? subjective probability
________ probability is an estimate based on personal belief, experience, or knowledge of a situation. Subjective
A fair die is rolled nine times. What is the probability that an odd number (1, 3, or 5) will occur less than 3 times? .0899
A ________ probability distribution indicates the probability of r successes in n trials. binomial
A ________ probability is the probability of a single event occurring. objective
An automotive center keeps tracks of customer complaints received each week. The probability distribution for complaints can be represented as the table shown below. The random variable xi represents the number of complaints, and p(xi) is the probability of receiving xi complaints. What is the average number of complaints received per week? 2.12
The weight of a jar of jelly is normally distributed with a mean of 16 oz and a standard deviation of 0.02 oz. What is the probability that a jar of jelly contains less than 16 oz? .3085
A professor would like to assign grades such that 5% of students receive As. If the exam average is 62 with a standard deviation of 13, what grade should be the cutoff for an A? (Round your answer.)
Under the normal curve, the area between z = 2 and z = 2 includes ________ of the values. 95%
The owner of a seafood market determined that the average weight for a crab is 1.6 pounds with a standard deviation of 0.4 pound. What weight is exceeded by 2% of all of the crabs? (Assume the weights are normally distributed.) 2.42 pounds
The expected value of the standard normal distribution is equal to: 0
Mutually exclusive events are events with identical probabilities. events that have no outcomes in common. events that have no effect on each other. events that are represented in a Venn diagram by two overlapping circles.
Experiments with repeated independent trials will be described by the binomial distribution if each trial result influences the next. each trial has exactly two outcomes whose probabilities do not change. the trials are continuous. the time between trials is constant.
Objective probabilities that can be stated prior to the occurrence of an event are deterministic or probabilistic. objective or subjective. classical or a priori. relative or subjective.
In a binomial distribution, for each of n trials, the event time between trials is constant. always has the same probability of occurring. result of the first trial influence the next trial. trials are continuous.
For some positive value of Z, the probability that a standard normal variable is between 0 and Z is 0.2910. The value of Z is: 0.81
Employees of a local company are classified according to gender and job type. The following table summarizes the number of people in each job category. If an employee is selected at random, what is the probability that the employee is female given that the employee is a salaried staff member? 0.60
Given that the employee is a salaried staff member? .50 .60 .625 .70
A fair die is rolled 8 times. What is the probability that an even number (2, 4, or 6) will occur between 2 and 4 times? .2188
A ________ probability is the probability that an event will occur given that another event has already occurred. conditional
The events in an experiment are ________ if only one can occur at a time. mutually exclusive
In Bayesian analysis, additional information is used to alter the ________ probability of the occurrence of an event. marginal
The metropolitan airport commission is considering the establishment of limitations on noise pollution around a local airport. At the present time, the noise level per jet takeoff in one neighborhood near the airport is approximately normally distributed with a mean of 100 decibels and a standard deviation of 3 decibels. What is the probability that a randomly selected jet will generate a noise level of more than 105 decibels? 0.0228
A frequency distribution is an organization of ________ data about the events in an experiment. quantitative