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1. If the alpha level is changed from a of 0.05 to a =0.01 what happens to the probability of type 1 error ?
2.Answer the following about power and type II error
1.the power of a test is 0.65, what is the probability of type II error ?
2.what happens to the probability of type II error as a power increases?
3. Researchers may draw incorrect conclusions about their research (as know as type 1 or type II) , which type of error is considered more serious and why?
you need to test the alternative hypothesis that an average is greater than 70. if the population average is 70 and
When is it important to have matched pairs rather than two independent sets of data?
As the financial manager of ABC computers, you are ready to make some decisions. You are trying to see where revenues are going?is the company ready to expand, and if so, when?
1.an experiment was conducted to determine the effects of three different pesticides p1p2p3 on the yield of three
the director of a government agency has been given a list of 12 firms cited for unfair labor practices. because of
Suppose that a model for the joint distribution of these rvs is a bivariate normal distribution.
given a sample size of 34 with sample mean of 660.3 and stand dev of 104.9 we have the hypotheseisnull is h0u700alt hyp
Which of the statements about line-balancing is true and if a precedence relationship exists between tasks A and B, they cannot be assigned to the same work station.
Find the proportion of female college students whose height is greater than 65 inches. Then find the proportion of female college students whose height is no more than 65 inches.
State the appropriate hypotheses. Obtain a test statistic and p-value. Interpret the results at ? = .01. Is normality assured? Is the difference large enough to be important?
A pilot survey reveals that 5 of the 50 sampled hold two or more jobs. How many in the workforce should be interviewed to meet your requirements?
The probability of a player weighing more than 241.25 pounds on a team with the mean weight of 200 pounds and a standard deviation of 25 pounds is ??
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