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Two teams of workers assemble automobile engines at a manufacturing plant in Michigan. A random sample of 145 assemblies from team 1 shows 15 unacceptable assemblies. A similar random sample of 125 assemblies from team 2 shows 8 unacceptable assemblies.
If you are interested in determining if there is sufficient evidence to conclude, at the 10% significance level, that the two teams differ with respect to their proportions of unacceptable assemblies, what is/are the critical value you would use to conduct such a test of hypothesis?
The candy company claims that 10% of the M&M's it produces are green. Suppose that the candies are packaged at random in small bags containing about 50 M&M's. A class of elementary school students learning about percents opens several bags, counts th..
a biology quiz consists of ten multiple-choice questions. seven must be answered correctly to receive a passing grade.
the number of robberies in each precinct in 2009 is what level of measurement?1. none2. nominal3. ratio4.
Suppose that 50% of all people are opposed, evaluate probability of getting at least 89% opposed in survey of 1012 randomly selected people.
Based on the table on the front of the test, perform the following tasks:Graph and plot the 16 points (Use the blank graph on the next page of this test).
the body mass index bmi was recorded for 40 males. find the 5-number summary that would be used for a box plot of this
This sample for the proportion of the population that would favor a recount. What is the Point Estimate for the proportion of the population that would favor a recount?
What is the probability that no customers arrive between 8:30 A.M. and 9:30 A.M. on Monday morning? What is the expected number of arrivals in this period?
The sampled results show that sample mean and standard deviation were $52.00 and $17.50, respectively. Use this information to create a 95% confidence interval for the mean.
The mean time between failures is found to be 322.4 hours for a sample group. assuming that s= 45.0 hours, find the 99% confidence interval for the mean time between failures for all such radios.
The average service time appears significantly longer than 90 seconds. What is the actual average service time? What critical value should be used in the magazine"s hypothesis test?
The J.O. Supplies Company buys calculators from a Korean supplier. The probability of a defective calculator is 10%. What is the probability that 4 or more of the calculators will be defective?
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