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The proportion of all births in the United States that were Caesarian deliveries in 2002 was 0.26. One particular county found that 35,600 of its 143,000 births were Caesarian that year, and so . A test of H0 : p 0.26 against Ha : p 0.26 produces z = +9.48 and so the P-value is 0.000, which is very small. Does this mean proportion of Caesarians in that county is very different from 0.26, or that we have very strong evidence that this county's proportion of Caesarians does not conform to the national rate of 0.26?
Suppose that I am now going to dial a single long-distance number. What is the probability that I will erroneously reach a foreign country?
consider a dial having a pointer that is equally likely to point to each of n region numbered 12...n. when we spin the
They both want to know what family member typically does the research about possible honeymoon destinations, and who primarily makes the decision on selecting the destination.
A researcher, for reasons passing understanding, wishes to assess the association between gender and total cholesterol values. What would be the appropriate statistical procedure
a sample survey is designed to estimate the proportion of sports utility vehicles being driven in the state of
There were 23 people at my last Arachnophobics (fear of spiders) Anonymous' Halloween party. As a gag fake spiders were put into the gift boxes to be handed out when people came in.
Calculate a 99.9 percent confidence interval and write an interpretation that tells about using Krups coffee makers in airplanes.
In a large corporation, 80% of the employees are men and 20% are women. The highest levels of education obtained by the employees are graduate training for 10% of the men, undergraduate training for 30% of the men, and high school training for 60%..
the time between arrivals of large comets on earth is exponentially distributed with a mean of one year.a. what is the
Give an ending for the below statement.Last week Tom had exams in Statistics and in English. He scored 10 points above the mean on both exams. From this information, you can conclude.
What percentage of personal checking account customers carry average daily balances in excess of $800? What percentage of the banks customers carries average daily balances below of $200?
One of the most common forms of colorblindness is a sex-linked hereditary condition caused by a defect on the X chromosome (one of the two chromosomes that determine gender).
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