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Question : X is a continuous random variable uniformly distributed on [20, 45] that is, the end points c = 20 and d = 45.
a. Find f (x)
b. Find the mean of x
c. Find P (20 < x < 30)
d. Find P (20 ≤ x ≤ 30)
e. Find P (x < 40)
A random sample of students is selected, and each one is asked to try first brand A and then brand B, or vice versa with the order determined at random.
what percent of the total number of seeds germinated?
what is the chance the average contents of the cans will be less than advertised and what will be the standard deviation of the number of men who help at home, based on the first survey
A radio station wants to know if residents in their area are in favor of a proposed tax increase. They invite listeners to call in to respond to the poll. 645 of the 800 who responded were against the tax.
What is the standard deviation of expected returns for Stock X? For Stock Y?
Find out the operating characteristics for this system.
A study of cardiovascular risk factors compared heavy smokers, light smokers, and nonsmokers. Both men and women were included in the study and gender differences were also to be investigated. One of the variables measured was the heart rate after..
Compute a 95% confidence interval for the mean using the formula and where is the mean of the ten random numbers.
What is the approximate permutation test P-value and What is the permutation test P-value for testing the equality of the means versus the hypothesis that the mean change for the treatment group is larger than the mean treatment for the control gro..
The weight of the oranges, in pounds (1 pound = 16 ounces) is a random variable with standard deviation
CASE STUDY: Are the Fish Safe to Eat? Assessing which Factors affect Mercury Levels in Fish in Maine Lakes.
If we fit the least-squares line to the 12 data points (one for each month) we obtain the following results from a software package. Notice that temperature is taken as the explanatory variable and crawling age as the response.
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