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A researcher is interested in the relationship between birth order and personality. A sample of n=100 people is obtained, all of whom grew up in families as one of three children. Each person is given a personality test and the researcher also records the persons birth order position (1st born, 2nd, or 3rd). The frequencies from this study are shown in the following table. On the basis of these data can the researcher conclude that there is a significant relation between birth order and personality? Test at the 0.05 level of significance
a survey claims that the average cost of a hotel room in atlanta is 69.21. to test the claim a researcher selects a
maria collected data on amount spend for entertainment each week on average. after constructing a histogram maria
Develop 95% confidence intervals for the proportion of all students, the proportionof male students, and the proportion of female students who were involved in sometype of cheating.
With a confidence of 95%, what is the margin of error for the proportion of all carp that would incorporate the gene into their DNA?
an industrial hygienist want to be able to estimate the level of carbon monoxide in a plant at the a 0.01 level.
A new speed limit will be initiated such that approximately 10% of vehicles will be over the speed limit. What is the new speed limit based on this criterion? In what way do you think the actual distribution of speeds differs from a normal distribu..
A coin is flipped three times.a. Draw a tree diagram that represents all possibleoutcomes. b. Identify all branches that represent the event"exactly one head occurred.
The mean return on investment is 25 percent and the standard deviation 5.2 percent. Compare the relative dispersion for the price-earnings ratios and return on investment.
several population studies have demonstrated an inverse correlation of the rate of sudden infant death syndrome sids
Use an alpha level of .01 and test the hypothesis that the two methods are producing the same mean.
Does the confidence interval contain the value of 35 mm, which is believed to be the standard deviation of sitting heights of women?
the weinberg electronics corporation manufactures four highly technical products that its supplies to aerospace firms
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