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Probability distributions
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Questions (279)
MY MAIN PROBLEM IS FIGURING OUT WHAT DISCRETE DISTRIBUTION TO USE, BERNOULLI, BINOMIAL, DISCRETE UNIFORM, GEOMETRIC NEGATIVE
5 answers
asked by
Amelie
831 views
a driver passes 4 sets of traffic lights. the random varaible X is the number of traffic lights he has to stop at. the
1 answer
asked by
mick
696 views
x and y independent exponential r.v with respctive parameters 2 and 3. find the cdf and density of z = x/y.
1 answer
asked by
ripa
362 views
Would really urgently appreciate answers to these questions. Thanks.
3. Suppose that two lotteries each have n possible numbers
1 answer
asked by
Johnny
614 views
Which properties are true for a normal distribution? (Note that I didn’t say standard normal distribution.)
1 answer
asked anonymously
40 views
A recent survey found that 70% of all adults over 50 wear glasses for driving. You randomly select 30 adults over 50, and ask if
3 answers
asked by
Karen
3,936 views
Scores on a certain test are normally distributed with a variance of 14. A researcher wishes to estimate the mean score achieved
5 answers
asked by
Sarah
2,269 views
According to a survey 35% of adults are against using animals for research. Assume that this result holds true for the current
3 answers
asked by
Sarita
1,925 views
A random variable X is best described by a continuous uniform distribution from 20 to 45 inclusive. The standard deviation of
4 answers
asked by
Anonymous
1,837 views
A particular fruit's weights are normally distributed, with a mean of 594 grams and a standard deviation of 16 grams.
If you pick
4 answers
asked by
pierce college
1,662 views
Cellular Phone Sales The probability that a cellular phone company kiosk sells X number of new phone contracts per day is shown
3 answers
asked by
Victor
1,663 views
assume that adults have IQ scores that are normally distributed with a mean of 100 and a standard deviation of 20. find the
4 answers
asked by
samantha
1,537 views
Which of the following is not a characteristic of Students' t distribution?
A) For large samples, the t and z distributions are
3 answers
asked by
Sue
1,516 views
Five males with a particular genetic disorder have one child each. The random variable x is the number of children among the
4 answers
asked by
Mary
1,512 views
can normal distribution be skewed left or skewed right?
1 answer
asked anonymously
39 views
True or false: The normal distribution is an appropriate density curve to model the height variable
1 answer
asked anonymously
32 views
The table describes a probability distribution for a certain event. Find the mean for the probability distribution. X, 10, 20,
1 answer
asked anonymously
43 views
The table displays the probabilities of profit values at a company. The random variable X displays gains and losses in thousands
1 answer
asked anonymously
54 views
A sales analyst listed the probabilities of profits and losses in dollars for a certain company. Find the mean for the
1 answer
asked anonymously
73 views
Before a DVD player leaves
the factory, it is given a quality-control check. The probability that a DVD player contains 0, 1, or
4 answers
asked by
Hayley
1,299 views
A volunteer ambulance service handles 0 to 5 service calls on any given day. The probability distribution for the number of
1 answer
asked by
Karen
1,255 views
Does the t distribution have a mean of zero, or is it a continuous distribution?
4 answers
asked by
Britt
1,240 views
The personnel office at a large electronics firm regularly schedules job interviews and maintains records of the interviews.
2 answers
asked by
larae
1,211 views
the random variable x is normally distributed with a mean of 75 and a standard deviation of 15.0. For this distribution, what is
3 answers
asked by
marie
1,197 views
The lifetime of a SuperTough AAA battery is normally distributed with mean of 28.5 hours and standard deviation of 5.3 hours.
2 answers
asked by
Sav
1,213 views
Let the random variable x represent the number of girls in a family with three children. Assume the probability of a child
being
1 answer
asked by
slomomo
1,186 views
A mathematically defined curve that is the comparison distribution used in ANOVA is called the:
- Normal distribution - Chi
2 answers
asked by
Trey
1,175 views
A spinner contains four sections: red, blue, green, and yellow. Joaquin spins the spinner twice. The set of outcomes is given as
1 answer
asked by
Anonymous
1,142 views
Suppose X1;X2;...;X5 is a random sample from a n(0; variance) distribution. define
U = X1+X2+X3+X4; V =
1 answer
asked by
ruth
1,125 views
Two balanced dice are rolled. Let x be the product of the two dice.
3.1. Construct the probability distributions of x.
2 answers
asked by
akum
1,106 views
7 men and 3 women are ranked according to their scores on an exam. Assume that no two scores are alike, and that all 10!
1 answer
asked by
tom
1,052 views
An investment broker reports that yearly returns on common stocks are normally distributed with a mean of 12.4 percent and a
1 answer
asked by
Michael
1,029 views
Suppose in a carnival game, there are six identical boxes, one of which contains a prize. A contestant wins the prize by
1 answer
asked by
Jacob
1,057 views
A contractor is interested in the total cost of a project for which he intends to bid. He
estimates that materials will cost
2 answers
asked by
Lisa
1,040 views
Determine if the following are probability distributions (if no, state why).
a. X 3 6 9 12 15 P(X) 4/9 2/9 1/9 1/9 1/9
2 answers
asked by
Tyler
1,008 views
1. In a biology class, your final grade is based on several things: a lab score, scores on two major tests and your score on the
2 answers
asked by
elsa
1,019 views
According to internal testing done by the Get-A-Grip tire company, the lifetime of tires sold on new cars is normally
2 answers
asked by
Brianna
1,020 views
Assume that a procedure yields a binomial distribution with n=297
trials and the probability of success for one trial is p=37%
1 answer
asked anonymously
35 views
A professional gambler claims that he has loaded a die so that the outcomes of 1,2,3,4,5,6 have corrresponding probabilities of
3 answers
asked by
Jessica
980 views
Assume that a procedure yields a binomial distribution with n=297
trials and the probability of success for one trial is p=37%
1 answer
asked anonymously
44 views
A final exam in sociology has a mean of 72 and a standard deviation of 9.2. If 35 students are randomly selected, find the
2 answers
asked by
Anonymous
954 views
15.34 In a four-digit lottery, each of the four digits is supposed to have the same probability of occurrence.
The table shows
2 answers
asked by
Anonymous
957 views
In a game you roll two fair dice. If the sum of the two numbers obtained is 3,4,9,10 or 11 you win $20. If the sum is 5,6,7 or 8
2 answers
asked by
Edmund
932 views
Assume that the weight loss for the first two months of a diet program has a uniform distribution over the interval 6 to 12
2 answers
asked by
luke
921 views
At a ski area in Vermont, the daytime high temperature is normally distributed during
January, with a mean of 22°F and a
2 answers
asked by
john
930 views
The Information Systems Audit and Control Association surveyed office workers to learn about the anticipated usage of office
1 answer
asked by
Kelly Luth
901 views
1. The on-campus housing costs for a semester at a state university are Normally distributed with
a mean of $1553 and a standard
2 answers
asked by
Sarah
880 views
Bookstore has a website for which 90 percent of their book sales are to out of state customers and not subject to the collection
1 answer
asked by
Teresa
836 views
The average salary for graduates entering the actuarial field is $40,000. If the salaries are normally distributed with a
2 answers
asked by
Mary
849 views
Suppose in a carnival game, there are six identical boxes, one of which contains a prize. A contestant wins the prize by
1 answer
asked by
Jacob
840 views
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Parent Categories (16)
Apple picking probability
Continuous Random Variables
Data Analysis
Expected Value
Expected Value and Variance
Math/Statistics
Probability
Probability and Statistics
Probability Theory
Random Variables
Sampling and Probability
Statistical Analysis
Statistical Mechanics
Statistics
Statistics and Probability
Statistics or Probability