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The probability density function of the random variable x is given by f(x)= (3/2)x^2, -1<x<1, 0 elsewhere.
a. Find the cumulative distribution function of the random variable X.
b. Sketch f(x) and F(x) on the same graph.
Is there evidence to suggest a difference in the mean waiting times at the four body shops? Use the .05 significance level.
The number of children, x, belonging to each of eight families registering for swimming was 2, 2, 2, 4, 2, 1, 2, 2. Find the mean, x. (Give answer correct to 2 decimal places.)
They plan to set up a radar trap and check the speeds of 80 randomly selected cars. Can this distribution be approximated by a normal curve?
One of the most famous probability calculations is called the "birthday problem". In probability theory, the birthday problem or birthday paradox concerns the probability that, in a set of n randomly chosen people
Develop a spreadsheet model to determine the optimal number of magazines to order each day. Use 500 replications and round the demand values generated by the normal random number generator (RNG) to the closest integer value.
The mean number of flaws per 100 m of material produced on a certain machine at Blanktown Fabrics is 2. If flaws occur randomly, find the probability that in 50 m of material there will be less than 2 flaws.
which of the following is not an assumption for one-way analysis of variance?the p populations of values of the
In a survey of the 3000 boy scouts in the National Capital Area Council (NCAC), it is found that they have a mean weight of 135 lbs with a standard deviation of 15 lbs. How many of the boy scouts have weights between 120 lbs and 150 lbs.?
In random samples of 12 from each of two normal populations, we found the following statistics: Describe what happens when the sample standard deviations get larger.
A sample of 8 jars has a mean of 15.6 ounces and a standard deviation of 0.3 ounce. Is there enough evidence to support the consumer's conjecture at a = 0.05 and how can this be graphed?
question it would be quite risky for you to insure the life of a 21-year-old friend under the terms of above
if a given mesokurtic distribution has a mean of 100 and a standard deviation of 10 find the approximate value of the
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