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Two urns contain coloured balls. urn 1 contains 4 blue, 3 green and 5 red balls. urn 2 contains 6 blue, 2 green and 3 red balls. a ball is selected at random from urn 1 and transferred to urn 2. a ball is then selected at random from urn 2. if the ball selected from urn 2 is red, what is the probability that the ball transferred from urn 1 was...(i)red?
A statistical study reported that a drug was effective with a p-value of .042. Explain in words what this tells you.
Use the least squares method to find the regression coefficients b0 and b1. State the simple linear regression equation.
Suppose you compute a simple linear regression on a single sample. Then you find additional data and recompute the regression on the larger sample and that the result is an increase in the regression slope.
Test out an suitable hypothesis also state your conclusion. Make sure the suitable assumption as well as conditions are satisfied before you proceed.
How can these three levels be used to evaluate risk to patients in implementing decisions based on research findings? a statistical significance of p
A sample of 40 observations is selected from one somewhat normal population. The sample mean is 102 and the sample standard deviation is 5.
Three are selected, at random, without replacement from the batch. What is the probability that the third is not defective given that one of the previous two are defective?
The chance that all 50 residents in a neighborhood end up being the sample of residents selected is: the population of the suburb divided by 50.
The use of linear regression is a critical tool for a manager's decision-making ability. Please carefully read the example below and try to answer the questions in terms of the problem context.
They became ________ likely to underperform on aptitude tests and ________ likely to become aggressive toward someone who had insulted them.
The U.S.Census Bureau announced that the median sales price of new homes sold i April 2009 was $221,660, and the mean sales price waas $274,300. Assume that the standard deviation of the prices is $90,000.
If a sample of 30 people selected from 300, find the probability that the mean will be less than 156 pounds using the correction factor.
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