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What is the predicted blood pressure for an average 17 year old as estimated from the regression line? And the standard error of the estimate for a 17year old ?
A package of seeds states that the probability of germination is 0.92. For a package containing 75 seeds, the mean and variance of the number of seeds germinating are:
The dealership would now like some general information based on the entire sample of vehicles. Calculate and explain the following:
The appropriate use of multiple regression depends on being able to make four basic assumptions about the data being used to develop the regression model:
If standard deviation is 50 hours and α is equal to 0.01, what values for mean x will result in rejection of null hypothesis.
Times spent studying by students in the week before final exams follow a normal distribution with standard deviation 8 hours. A random sample of four students was taken in order to estimate the mean study time for the population of all students.
Find the questions based on multiple regression - The coefficient of determination for the above model is approximately
Components shipped include 0.5% defectives. You plan to select 80 items; if 0 are defective, you will assume all are okay.
The frequency distribution below shows the distribution for suspended solid concentration (in PPM) in river water of 50 different waters collected in September 2011.
Use an alpha level of .01 and test the hypothesis that the two methods are producing the same mean.
The percentage rates of home ownership for 8 randomly selected states are listed below. Estimate the population variance and standard deviation for the percentage rate of home ownership with 99% confidence level.
Evaluate the factor effects. Find out which factors are significant in explaining yield.
In the Distance problems, the kids are given a Rate (speed) that a vehicle is going, as well as a Time that the vehicle travels, and asked to calculate the Distance travelled. In the Rate problems they are asked to compute Rate from the other two ..
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