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A company that builds homes advertises that, by choosing from its upgrade options, each of its new homes is available in 512 different variations. How many upgrade options does the company offer?
Calculate the Kruskal-Wallis H statistic for this data set.- Make a decision regarding the null hypothesis. Is there a significant difference among the groups?
Researcher expects 12 point treatment effect and plans to use two-tailed hypothesis test with u α = .05. Calculate the power of test if researcher uses a sample of n = 16 individuals.
In this American Cancer Society study, the risk (probability) of dying of lung cancer was about the same as for those who had never smoked.
Annually from tornadoes in the U.S.A. is less than 30. If a sample of 9 randomly selected years had a standard deviation of 29, is the claim believable? Use = .01?
The university data center has two main computers. The center wants to examine whether computer 1 is receiving tasks that require processing times comparable to those of computer 2.
There are 16 students giving final presentations in your history course. (a) Three students present per day. How many presentations orders are possible
A developmental psychologist hypothesized that children who are reared in families where more than one language is spoken will have higher abstract reasoning
At the .05 significance level, can we conclude that the mean waiting time is less than 3 minutes?
Identify the dependent variable for this study and what scale of measurement (nominal, ordinal, interval, or ratio) is used to measure the dependent variable?
A generator system consists of a primary and a standby unit. the primary fails at a constant rate of 2 per manth, the standby unit fails only when on-line.
How optimal or non-optimal is today's level of economic inequality in the USA? This is the subject for a couple of writing assignments. Are we too equal? Too unequal? About right?
random sample
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