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The following sample observations were randomly selected:
X 10,6,12,6,8,8,12,16
Y 26,30,14,24,26,22,18,10
a) Compute the coefficient of correlation and the coefficient of determination
b) Determine the regression equation.
c) Determine what y is when x=36.
d) Determine the standard error of estimate
What conclusions can you draw about the nature of the relationship between anxiety and exam performance?
In the real world, a given null hypothesis is false; but the collected data lead to the null hypothesis being accepted. That is, the data lead to a failure to reject the null hypothesis.
Wheel-Rite has agreed to ship the maximum number of wheel bearings that it produces each day to Itex when an order has been received.
For a standard normal curve, find the z-score that separates the bottom 90% from the top 10%.
Following data represent concentration of dissolved organic carbon (mg/L) collected from 20 samples of organic soil. Sample standard deviation is?
A well-established power-drink dispensing machine is programmed to dispense an average of 2.02 liters into a container labled"2 liters". Actual quantities are known to be normally distributed with a standard deviation of 0.015 liters. What is the ..
Transportation problem using the stepping stone method
the probability that a household is both prosperous and educated is P (A and B) = 0.082. What is the probability P (A or B) that the household selected is either prosperous or educated.
In 1990, the population of Austin, Texas, was 494,290. During the next 10 years, the population increased by about 3% each year.
Find the probability that 665 or fewer college students in the sample send and receive text messages with their phones? Is this result unusual?
Calculate power of test if researcher uses a sample of n = 16 individuals.
Without constructing the 98% confidence interval for the rate of effectiveness, would you expect the interval to be longer or shorter compared to the 95% confidence interval? Why?
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