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Downs and Abwender (2002) found neurological deficits in soccer players who are routinely hit on the head with soccer balls compared to swimmers, who are also athletes but who are not regularly hit in the head. Is this an example of an experimental or a nonexperimental study?
Calculate the probability that a randomly selected egg weights between 62.5 g and 68.75 g. Think of cartons of such eggs as SRSs of size 12 from the population of all eggs.
according to the consumer electronics manufacturers association 10 of all u.s. households have a fax machine and 52
a. Solve using the p value approch. b. Solve using the classical approch.
You are the quality control manager at Mars, Inc and you want to prove the company's claim that 10% of all M & M candies are blue. Is it possible to prove that claim using methods of hypothesis testing? Why or Why not?
q1. which of the following is a property of the linear correlation coefficient r?if all values of either the x or y
The hypothesis is that the average number of customers served per hour is 24 or less against the alternative hypothesis that the mean number of customers waiting is greater than 24.
Construct a 99% confidence interval for the true average amount of time customers spent in the restaurant. With a .99 probability, how large of a sample would have to be taken to provide a margin of error of 2.5 minutes or less?
Botanist is testing three plants and finds that prob of plant A being alive in a weak is 0.3 plant B is 0.6 and plant C 0.5 these probability are indipendant of each other. Determine the probability of all plants being alive after a weak.
A Federal funding program is available to low income neighborhoods. To qualify for the funding a neighborhood must have a mean household income of less then $15,000 per year.
Construct the ANOVA table (i.e. compute the between and within SS) and test if there appears to be any differences in means (use α = 0.05)
Suppose that in fact 8% of the apples on the truck do not meet the standards. What is the probability that the shipment will be accepted anyway?
Explain why it might be important to look at cancer incidence that is age-adjusted rather than just cancer incidence. Perform simple linear regression on these data and report your finding.
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