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Suppose we roll two dice. Let the random variables X and Y denote the numbers that appear on the dice. What is the expected value of X+Y?
When a strain gauge is stretched under uniaxial tension, its resistance varies with the imposed strain. A resistance bridge circuit is used to convert the resistance change into a voltage.
Various temperature measurements are recorded at different times for a particular day. the mean of 20 degrees C is obtained for 40 temperatures on 40 different days. Assuming that the standard deviation = 1.5 degree C, test the claim that the populat..
historical data suggests that a scientific journal accepts 10 of the manuscripts it receives rejects 50 of the
On each hand, the high roller will win $1 with probability 0.48 and lose $1 with probability 0.52. After the 500 hands, what is the probability.
Weekly rates of return (on an annualized basis) for certain securities over a given period are believed to be normally distributed with mean 8.00% and variance 0.25. Give two values x1 and x2 such that you are 95% sure that annualized weekly return..
A medical practice has record for N=900 patients. A simple random sample of n=300 was selected, and 210 of the sample patients had private health insurance. Estimate the percentage of patients with private health insurance and the standard error of..
Suppose the daily amount of solar radiation in Los Angeles is normally distribution with mean 450 calories and standard deviation 50.
Draw a scatter diagram of the data treating wind speed as the explanatory variable. What kind of trend do you see in the data - What is the equation
Religion. Census reports for a city indicate that 62% of residents classify themselves as Christian, 12% as Jewish, and 16% as members of other religions.
What is the explained variation? What is the mean square error and calculate the Coefficient of Determination and the Adjusted coefficient of Determination and Test for the overall usefulness of the model using F-Statistic at 5% and 1% significance..
Test the hypothesis that her students watch more TV than the average American child in the population using a .05 level of significance.
Find the sample mean for each group. Find the sample standard deviation for each group. Make a dot plot of the data sets A and B on the same line.
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