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To be able to conduct a t-test it is important:
That the independent- as well as the dependent variable is measured on a nominal or ordinal scale.
That the independent variable is measured on an interval- or ratio scale and the dependent variable is measured on a nominal- or ordinal scale.
That the independent- as well as the dependent variable is measured on an interval- or ratio scale.
That the dependent variable is measured on an interval- or ratio scale and the independent variable is measured on a nominal- or ordinal scale.
Brakes for a model of automobile fail with a Poisson distribution at an annual rate of 4.4/yr. What is the probability that
Assume that random variables X1,.....,X50 are independent and all have probability density function fX(x) = 1/x for 1
Estimate a probability that a seed from new plant will germinate a random sample of 3000 seeds, of those seeds 2430 germinated. What is the sample space for this problem and does it add up tp 1? are the outcome in the sample space equally likely?
Suppose that the probability is 1 in 3,900,000 that a single auto trip in the U.S. would result in the death of the driver. Over a lifetime, an average U.S. driver takes 50,000 trips.
determine the appropriate hypothesis tests to be used in four research projects described below. in selecting the
The heights, in feet, of the five tallest buildings in four large cities are compared. What is the critical value if the level of significance is 0.10?
A power of 0.2203 can be interpreted to mean there is a 22.03% chance of selecting a sample whose sample mean is larger than 166.3 lb.
Could you please tell in what situation the maentl hanszel test is more appropriate than using chi square. I believe maentl hanszel is used when a confounding variable is present thus allowing for adjustment
let r be the region in the first quadrant bounded by the curves yx and yx5. a random point xy is selected from r. a
So construct a multiple regression model for predicting the crime rate based upon various explanatory variables unemployment rate, median income, education level.
What percentage of population scored between the mean and Jorge?
Also, the sample data appear to have a bell-shaped distribution. Construct the 95% confidence interval for the mean time spent on paperwork by all managers.
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