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A batch of 25 injection-molded parts contains five that have suffered excessive shrinkage. If two parts are selected at random, and without replacement, what is the probability that the second part selected is one with excessive shrinkage?
a committee is to consist of 50 randomly chosen united states senators. find the expected number of different states to
With a=.05 and a sample of n=15 in a repeated-measures study comparing two treatments, what are the t statistic boundaries for the two-tailed critical region?
i what is the sampling distribution of a sampe mean for a normally distributed random variable.ii if a variable iq is
pieces of vulcanite were examined according to porosity and dimensional defects and the results are shown below. test
during a national debate on changes to health care a cable news service performs an opinion poll of 500 small-business
For each year, create a bar chart and a pie chart.
the height of the water level in mineral water bottles has a mean of 140 mm and a standard deviation of 4 mm. assume
Iif two voters are randomly selected for a telephone survey, what is the probability that they are both Republicans? Round your answer to 4 decimal places.
At the 0.01 significance level, is there a difference in the mean number of times men and women order takeout dinners in a month? Calculation of the p-value is not required.
according to u.s. news amp world report data in 1995 tuition costs at indiana university a public university were 2984
Contains two black, six brown, and two blue socks, all randomly arranged. What is the probability that the two he draws are a matching pair?
administrators at a university will charge students 158 to attend a seminar. it costs 2160 to reserve a room
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