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At some vacation destinations, "all-inclusive" resorts allow you to pay a flat rate and then eat and drink as much as you want. There has been concern about whether these deals might lead to excessive consumption of alcohol by young adults on spring break trips. You decide to spend your spring break collecting data on this issue. Of course, you need to take all of your friends on this funded research trip, because you need a lot of research assistants! You collect data on the number of drinks consumed in a day by people staying at all-inclusive resorts and by those staying at non-inclusive resorts. Your data include the following: All-inclusive resort guests: 10, 8, 13 Non-inclusive resort guests: 3, 15, 7
a. Conduct all six steps of an independent-samples t-test. Be sure to label all six steps.
b. Report the statistics as you would in a journal article.
c. Was there a shortcut you could or did use to compute your hypothesis test?
d. According to SPSS, the actual p value for the test statistic is .687. Use Excel to determine prep.
Construct a 90% confidence interval on the difference in fraction nonconforming between the two processes."
A factory finds,on average, 20% of the widgets produced by a given machine will be defective for certain specified requirements.
Motorola takes two weeks to supply an order. if the store manager is targeting a fill rate of 99%, what safety inventory should the store carry? What should its ROP be?
Determine equation in point-intercept form for line that goes through points (8,-1) and (4,3).
Does drug have significant effect on aggression? Use an alpha level of .05, two tails.
A survey of 600 non-fatal accidents showed that 111 involved the use of a cell phone. Find a point estimate for p, the population proportion of accidents that involved the use of a cell phone.
A random sample of 100 voters found that 44% were goint to vote for a certain candidate. Find the 99% limit for the population proportion of voters who will vote for that candidate.
Suppose a population proportion is .40, and 80% of the time when you draw a random sample from this population you get the sample proportion of .35 or more.
Why do we do power calculations with single sample z test? A) Because we can use Z area tables to calculate the power. B) Because comparing a sample mean against a population mean is very powerful
If is the proportion of the next 100 shoppers that buy a packet of the crackers after tasting a free sample, then the probability that fewer than 30% buy a packet after tasting a free sample is approximately.
Find out the critical value for the given degrees of freedom of the F-test also the lower-tailed critical value of F test for the similar level of significance
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.
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