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A pair of dice is rolled. Find the probability of rolling
a) a sum not more than 4
b) a sum not less than 10
c) a sum between 3 and 8 (exclusive)
d) a sum not more than 7
e) a sum not less than 6
f) a sum between 4 and 9 (exclusive)
A recent article in Vitality magazine reported that the mean amount of leisure time per week for American men is 40.0 hours. You believe this figure is too large and decide to conduct your own test.
suppose the coach of the football team wants to estimate the proportion of the population of fans who support his
WNAE, an AM station totally dedicated to deliver news, found that while the Distribution of listeners tune in the station follows the normal Distribution.
The Ministry of Environment, Science and Technology has one of its administrative centers located out of town and the majority of employees drive to work. As part of the Ministry’s ‘green’ policy
suppose that 75 of adult americans agree that while downloading music from the internet and then selling it is piracy
derive the expected mean squares for a two-factor analysis of variance with one observation per cell assuming that both
The ability to pay attention and the level of stimulation in the environment. how would a researcher work around this issue?
a test consists of 25 multiple-choice questions. assume that a test taker randomly guesses a choice for each and every
List all possible combinations of opinions that can be held by students A, B, and C. (Hint: There are eight possibilities.) Then give the probability of each of these outcomes. Note that they are not equally likely.
A university found that 20 percent of its students withdraw without completing the introductory statistics. Assume that 20 students registered for the course.
In the construction of confidence intervals, if all other quantities are unchanged, an increase in the sample size will lead to a ____________ interval.
What is the Bonferroni adjustment? What would the Bonferroni adjustment be for a study with four groups for which a researcher decided to use t-tests?
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