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Decide if the situation involves permutations, combinations, or neither. Explain your reasoning. The number of ways 13 people can line up in a row for concert tickets. The number of ways 13 people can line up in a row for concert tickets. Does the situation involve permutations, combinations, or neither? Choose the correct answer below. A. Neither. A line of people is neither an ordered arrangement of objects, nor a selection of objects from a group of objects. B. Combinations. The order of the 13 people in line does not matter. Combinations. The order of the 13 people in line does not matter. C. Permutations. The order of the 13 people in line matters. Permutations. The order of the 13 people in line matters.
In a random sample of 120 households, what is the probability that greater than 20 households, but, less than 35 households receive a retirement income?
In checking a random sample of 400 emergency room patients, a board member finds that 35% of those treated were not true emergency cases. Using an appropriate hypothesis test and the 0.05 level, evaluate the administrator's statement.
1. in 2005 the average gpa for students was 3.15. a sample in 2008 showed that the average gpa for students was 3.46.
The null hypothesis is to be tested at 95% confidence. Determine the critical value for this test. What do you conclude?
Having had success using customer data to build predictive models to guide direct mail campaigns for special plumbing offers, he considers that data mining could help him to identify a subset of customers who should be good prospects for his new s..
The Montana State Education Commission wants to estimate the percentage of tenth-grade students who read at or below the eighth-grade level. How large a sample should be selected in order to estimate this proportion with a 98% confidence level an..
Percentage who say "Yes" from 7% to 3.5%? Explain to someone who knows no statistics the advantage of taking a larger sample in a survey of opinion.
What is the difference between statistical significance and practical significance?- Discuss the reasons that a researcher might obtain non significant results.
(AT) The dataset ADHD Treatment has four scores per subject. a. Is the design between-subjects or within-subjects?
Find the probability that a randomly selected teacher earns and what sample size is necessary to double the standard error of the mean and what sample size is needed to cut the standard error of the mean in half?
in a brand awareness study of 80 consumers 52 of them were able to identify corolla as a type of toyota automobile. the
question 1 given a binomial random variable with n10 and p .3 use the formula to find the following probabilitiesapx
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