788 Answered Questions for the topic Probability & Statistics

Probability & Statistics

03/25/14

Probability
The amount of milk sold each day by a grocery store varies according to the normal distribution with mean 130 gallons and standrd deviation 12 gallons. On a randomly selected day, the probability... more
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Probability & Statistics

03/25/14

Probability Question
Many random number generators allow users to specify the range of the random numbers to be produced.  Suppose that you specify that the rndom number Y can take any value between 0 and 2.  Then the... more
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Probability & Statistics Statistics Statistical Method Time Series

03/12/14

Yule-Walker equations
Problem . Show that the Yule-Walker equations hold even when we do not assume c=0.?
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Probability & Statistics

03/10/14

After a movie premiere , 99 of the first130 people surveyed said they liked the movie.
- what is the experienmantal probability that the next person surveyed will say she liked the movie? - what is the experimental probability that the next person surveyed will say she did not liked... more
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Probability & Statistics

02/19/14

probabiliy question . help
5% of the population has X disease. A screening test accurately detects the disease for 80% of the people who actually do have it. The test also incorrectly indicates the disease for 30% of the... more
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Probability & Statistics

02/19/14

monty hall problem with 4 doors
Explain the Monty Hall problem in the case of 4 doors computing specific probabilities.
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Probability & Statistics

02/13/14

what is the mean, standard dev. and mean absolute deviation of the number of units you expect to be able to sell
It costs $20,000,000 to build a factory to produce up to 250,000 widgets per year. The unit cost of producing one widget is $5000. You can sell widgets for $10,000 each. The probability that you... more
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Probability & Statistics

02/08/14

If A and B are independent event, show that the following pairs of events are also independent. (a) A and B' (b) A'and B'
where A' is the complement of A and B' is the complement of B
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Probability & Statistics

02/04/14

When selecting two people, find the probability that one works in an office and the other one drives a car?
I have a probability question from my intro to stats class. I can't figure out if it's dependent or independent. Overall, I really don't know how to figure it out. There are 2000 people in total... more
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Probability & Statistics

12/22/13

The slope and the y-intercept
Find the slope and the y-intercept for the line that passes through (-8,2) (11,4) The slope is=   The y-intercept is = d. Find the slope and the y-intercept for the line that passes through... more
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Probability & Statistics

12/21/13

Method of least squares
A magazine reported on a study of the reliability of a commercial kit to test for arsenic in groundwater. The field kit was used to test a sample of 20 groundwater wells in a country. In addition... more
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Probability & Statistics

12/18/13

Probability & Statistics
Find the slope and the y-intercept for the line that passes through (-6,1) (4,2)The slope is= The y-intercept is =d. Find the slope and the y-intercept for the line that passes through (-8,-4)... more
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Probability & Statistics

12/18/13

Probability & Statistics
A magazine reported on a study of the reliability of a commercial kit to test for arsenic in groundwater. The field kit was used to test a sample of 20 groundwater wells in a country. In addition... more
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Expert Answers •1

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