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In a known population of children, aggression is normally distributed with a µ=25, and σ=12. What is the estimated effect size if an experimental treatment where children are shown a violent film before measuring aggression has a mean of (a) 19, (b) 22, (c) 25, (d) 30, and (e) 35? For each part, also indicate whether the effect is small, medium or large?
What is the probability that the opponent rushes the ball?- Suppose the opponent has a first down. What is the probability of a pass?
More survey questions. Examine each of the following questions for possible bias. If you think the question is biased, indicate how and propose a better.
a random sample of 12 employees in a large manufacturing plant found the following figures for number of hours of
How many items would have to be produced in a batch to guarantee that a batch consists of no more than 1% defective items?
one coin in a collection of 25 has two heads both sides are heads. the rest are fair one h and one t. a coin is
We want to know if his support has decreased. In computing a test of hypothesis with , what is the estimate of the overall proportion?
the liquid chlorine added to swimming pools to combat algae has a relatively short shelf life before it loses its
If the decision maker knows nothing about the probabilities of the three states of nature, what is the recommended decision using the optimistic, conservative and minimax regret approaches?
Is there sufficient evidence to support a claim of different population means? Can we conclude that sunny days result in greater amounts of electrical energy?
Assume a mean wage of $1,000 and standard deviation of $100. What's the probability of finding an employee with a wage of between $790 and $1000?
The MacBurger restaurant chain claims that the waiting time of customers for service is normally distributed,
Suppose that the company is willing to consider dropping the distribution center limitations; that is, customers could be served by any of the distribution centers for which costs are available. Can costs be reduced? By how much - If the company d..
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