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Determine the critical region and critical values for z that would be used to test the null hypothesis at the given level of significance, as described in each of the following:
A. Ho:m = 63 and Ha:m # 63, alpha = 0.10
B. Ho:m <= 88 and Ha:m > 88, alpha = 0.01
C. Ho:m >= 24 and Ha:m < 24, alpha = 0.05
Assume if the students toss the coin 200 times each about 68% should have proportions among what two numbers.
The average American male wears a size 10 shoe and spends 4 hours a year tying a tie. The average American female college student owns 3.5 pairs of jeans.
Set up hypotheses to test if distribution of birthdays can be considered coming from uniform distribution.
It is claimed that 70% of the residents in a large town approve of the current zoning law. Four residents are to be randomly selected. Find the probability that:
Mean and standard deviation are 584.6 and 34.28
White blood cell counts for a group of volunteers before being innoculated, and white blood cell counts for a second group of volunteers after being innoculated.
According to a recent survey, 275 of 400 middle-aged Americans said they used the Internet regularly. 140 of 400 senior citizens said they used the Internet regularly.
Consider the following two columns that describe different types of data: A. Nominal 1. Qualitative B. Discrete 2. Quantitative C. Ordinal D. Continuous. The correctly paired groupings of the two columns is:
Two marbles are selected, one at a time from a jar of marbles containing 10 black, 10 brown, 10 white and 10 green marbles. Let x represent the number of white marbles selected in 2 separate selections from the jar.
Perform a significance test to assess whether there is an association between mortality from cirrhosis of the liver and duration of employment in the group hired after 1945. Report a p- value.
Perform a significance test to see if there is a relation between mortality and duration of employment in the group hired AFTER 1945 and report a p-value.
If a randomly selected student is a female student, what is the probability she is a C student?
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