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Components of a certain type are shipped to a supplier in batches of ten. Suppose that 70% of all such batches contain no defective component, 20% contain one defective component, and 10% contain two defective components. Two components are randomly selected from a batch and tested.
What is the probability that the batch contains one defective if neither of the sampled components is defective?
Microfracture knee surgery has a 75% chance of success on patients with degenerative knees. The surgery is performed on 5 patients. Find the probability of the surgery being successful on less than 3.
For each of the following, indicate whether the type of probability involved is an example of a priori probability, empirical probability, or subjective probability.
A researcher claims that the average age of people who buy lottery tickets is 70. A sample of 30 is selected and their ages are recorded as shown below. The standard deviation is 16. At alpha = 0.05 is there enough evidence to reject the researche..
Find the expected frequency for each cell and compute X stat square? Is it significant at alpha-0.05?
a random sample of 16 emergency reports was selected from the files of an ambulance service. the mean time computed
Dr Zak developed a test to measure depression. He sampled 100 university students to take his five item test. The group of students was comprised of 30 men and 70 women. In this group four persons were African American, six persons were Hispanic and ..
data is collected to test the hypotheses.ho p 0.35 vs ha p can not equal 0.351. you obtain a p-value of 0.021.
a researcher reports the following equation for a best-fitting straight line to a set of data points ycirc?1.01x3.24.
The sample data are summarized by the statistics n = 27, x = 4.6 years, s- 1.9 years.
Find out if the population monthly expenditure mean is less than $212. The level of significance selected is 1% and 26 accounts are sampled. What is the critical value?
1.an inventor claims that a device increases gas mileage by 4. a test of the device was done by randomly selecting 10
1. what research questions does the study address?2. what is goldbergu2019s rationale for the study? was the study
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