04/06/16

One-sample or two-sample t-test for testing for significant chance between percentages
I've located 15,000 random points within a study area and have classified the land cover for each point by overlaying the points on an aerial image. I've classified the same 15,300 points twice... more
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04/03/16

NOrmal distribution question: Stastics - 2
Suppose a study finds that the wing lengths of houseflies are normally distributed with a mean of 4.55mm and a standard deviation of about 0.392mm. What is the probability that a randomly selected... more
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04/02/16

I'm having trouble with this problem : integral e^(x+e^x)dx
How do I do this. Is the answer e^(e^x)?
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04/01/16

I need to know how to use the Probability binomial table for this question
I'm dealing with a probability that states: I have drawn nine cards, what is the probability A.)  four or more cards will be black.  B.)  2 or 3 cards will be black.  C.)  Zero, one or two cards... more
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03/31/16

The salaries of Pet Detectives are normally distributed with a mean of $32,000 and a standard deviation of $3000. If 100 Pet Detectives are randomly selected, f
Need the explanation of how to get the answer
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03/30/16

Finding the probability using the central limit theorem
QUESTION:   Assume 37% of adults take their favorite color is blue. In a sample of 36 randomly selected adults, find the estimated probability that more than 20 adults take their favorite color... more
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03/29/16

Statistics question: A random sample of 40 statistics students had an average test grade of 81.5
A random sample of 40 statistics students had an average test grade of 81.5 and a standard deviation of 10.2. Construct the confidence interval for the population mean, μ if c = 0.90.   The... more
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03/28/16

find the value za/2 that corresponds to a confidence level 98.22%
I need it asap
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03/22/16

What is the best predicted value for the response variable
What is the best predicted value for the response variable if there is no evidence of significant correlation in a sample?
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03/21/16

Probability statistics and two tailed test
A tomato farmer with a very large farm of approximately 2200 acres had heard about a new type of rather expensive fertilizer which would supposedly significantly increase his production. The frugal... more
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03/21/16

Suppose 34 cars start at a car race. In how many ways can the top 3 cars finish the? race?
This question has to deal with probablity stats. 
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03/20/16

The bass in Clear Lake have weights that are normally distributed with a mean of 2.4 pounds and a standard deviation of 0.8 pounds.
Determine the weights that delineate the middle 95% of the bass in Clear Lake. Enter the interval endpoints below in (f) and (g).(f) The left endpoint of the interval isRound your answer to the 2nd... more
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03/18/16

probability,(If E C F, then F^c C E^c) Q2 prove that P(EF^c) = P(E)-P(EF)
this a probability question.it is from my school math question
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03/14/16

If X ~ Binomial(n=50, p=0.02), what is the expected value of exp(1.8X)? Note: "exp" is the exponential function.
If X ~ Binomial(n=50, p=0.02), what is the expected value of exp(1.8X)? Note: "exp" is the exponential function.
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12/16/15

Convergence and Random Variables
With the Sample space being [0,1], suppose we are looking at a sequence of random variables Xn defined by Xωn = ωn . How can we prove that Xn converges to 0 in probability? And also what is its... more
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