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Suppose the problem statement is as follows. Roll two 6 sided dice and add the numbers on the faces. What is the total sample space S (A sample space is the set of all possible outcomes)? If we define an event A as all numbers between 3 and 9, what is the set defining A?
A sporting goods producer claims that the variance of the strengths of a certain fishing line is 15.9. A random sample of 15 spools has a variance of 21.8. At "alpha" = 0.01, can the claim be proven wrong
Unisys maintains a hurricane database which provides information on hurricanes in the Atlantic/ Caribbean/Gulf of Mexico and the Eastern Pacific Ocean.
When an experiment is conducted, one variable is manipulated to see the impact on another variable -- that's why experiments address causation.
A researcher studies the effect of cognitive psychotherapy on positive self-regard. The number of positive statements made about oneself is recorded for each participant during the first meeting.
q1. the discussion surrounding the anova is very important. this is a widely utilized statistical tool. what is the
If the sample size (n) is large, and the sample is a random sample, then the distribution of the sample mean x-bar is approximately a:
As long as there is either an upward or downward trend in the data, will a k-period moving average have a smaller mean square error than a moving average obtained with k+1 periods? Why or why not?
An independent second stage is normally distributed with a mean of 43 minutes and variance of 10 minutes. What is the probability that the two stages take over 80 minutes?
for a t distribution with 16 degrees of freedom find the area or probability in each region.4 digits to the right of
The latter is a random variable (any function of a random variable is a random variable). So what"s the corresponding fact about conditional expectation?
Proportion of out-of-tolerance items is greater than 0.02, the robot will be overhauled. Otherwise it will be allowed to continue operating. What is the probability that a satisfactory robot will be overhauled unnecessarily?
A PC manufacturer claims that no more than 2% of their machines are defective. In a random sample of 100 machines, it is found that 5% are defective. The manufacturer claims this is a fluke of the sample.
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