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In a study of the relationship between birth order and college success, an investigator found that 126 in a sample of 180 college graduates were firstborn or only children; in a sample of 100 nongraduates of comparable age and socioeconomic background, the number of firstborn or only children was 54. Estimate the difference in the proportions of firstborn or only children for the two populations from which these samples were drawn. Give a bound for the error of estimation.
Explain the decisions you made in the third cycle of the simulation. State the reasons for your decision and include an explanation of why you did not follow the recommendations of the stakeholders.
The question belongs to Basic Statistics and it discuss about creating alternate hypothesis for null hypothesis in research
A common error is neglecting to get ranked data for some statistical processes. Why do we have to have ranked data? Give an example of where you would need ranked data.
instead of rolling a die 100 times use statcrunch to simulate 100 rolls of a die. use statcrunch to create a random
question let n denote an inhomogeneous poisson process with intensity function lambdat t expt for t ge 0.a. find pn2
question considerthedataset123456789a. obtainthemeanandthemedianofthedata. whatistheshapeofthe distribution?b.
in one area of an orchard there are 17 trees of which 10 are busy and 7 are lean. if 4 trees are randomly selected for
For the most recent year available the mean annual cost to attend a private university in the US was $26,889. Assume the distribution of annual costs follows a normal probability distribution and the standard deviation is $4,500. 95% of all studen..
Test for the equality of the variances at α = 0.05. In parts (a) and (b), we assumed samples are independent. Now, we feel this assump- tion is not reasonable. Assuming that the difference of each pair is approximately normal, test that the mean B..
Which of the following descriptions of confidence intervals is correct? (Select all that apply). When conducting a hypothesis test, which one of the following p-values would you feel most confident to reject the null hypothesis
A study of the amount of time it takes a mechanic to rebuild the transmission for a 1992 Chevrolet Cavalier shows that the mean is 8.4 hours and the standard deviation is 1.8 hours.
Deciding on the number of observations to include in a sample is an important decision when planning a reasearch study. What information is required to make this descision
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