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In medical? studies, suppose that a true effect exists only 20?% of the time. Suppose also that when an effect truly? exists, there's a 46?% chance of making a Type II error and failing to detect it. Given that H0 is? rejected, approximate the probability of a Type I error by considering a tree diagram of what you would expect to happen with 1000 medical studies that test various hypotheses. Assume a significance level of 0.05. Round your answer to two decimal places.
from a population that is not normally distributed and whose standard deviation is not known a sample of 6 items is
Calculate the z - scores for the three samples, compare the z score to the t-statistic, is the null hypothesis accepted or rejected?
If the process is in control at the present values of its parameters, what proportion of the output will be nonconforming, assuming a normal distribution of the characteristic?
Case Background: You are to take on the role of Marley. Address your brief to Dan Block and Ed Spriggs. Your instructor will review the MPS portion of the MRP explosion with you before the MRP explosion can be completed.
Calculate the sample proportion of women who died in the week before Christmas. (Round your answer to three decimal places.)
A Geiger counter used in a spent nuclear fuel area records on the average of 40 counts per min. Determine the probability that there will be 2 counts in a 6-sec period.
The test statistics in a right tailed test is z= 2.50. Also use a .05 significance level and state the conclusion about the null hypothesis (reject null hypothesis or fail to reject the null hypothsis)
q1. the population of lengths of aluminum-coated steel sheets is normally distributed with a mean of 30.05 inches and a
For a random sample of 23 Asian countries, the variance on life expectancy was 7.3 years. What is the 95% confidence interval for the variance of life expectancy in all of Asia?
Eighteen first interviews are usually scheduled per day. What is the probability that the average length of time for the eighteen interviews will be 40 minutes or longer?
Define a relation in A as follows: If (m1, n1) and (m2, n2) are elements in A, then (m1, n1) if m1,n2 = n1,m2. Show that is an equivalence relation and describe its equivalence classes.
suppose a manufacturing company makes a certain item. the time to produce each item is normally distributed around a
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