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An exhaustive survey of all users In a wilderness park taken in 1980 revealed that the average number of persons per party was 2.6. In a random sample of 25 parties taken in 2005, the average was 3.2 persons, with a standard deviation of 1.08. Test the hypothesis that the number of persons per party has changed in the intervening years.
only 27 of us adults get enough leisure time exercise to achieve cardiovascular fitness. choose 3 adults at random find
A sample of 46 homes in a subdivision revealed that 20 were ranch style (as opposed to colonial, tri-level, or Cape Cod). Construct a 98 percent confidence interval for the true proportion of ranch style homes.
Graph this equation put at last five points for the equation. Graph each inequality. use the test point method.
tompkins associates reports that the mean clear height for a class a warehouse in the united states is 22 feet. suppose
Each candy in a paper cup and then obtaining the weight without accounting for the weight of the cup. How can this as a random error and systematic error?
acceptance samplinga teletronix company purchases large shipments of fluorscent bulbs. they randomly select and test 24
Find out correlation coefficient r, If student take 35 minutes to complete exam, what is his predicted score.
Get an answer from tutors to this homework question now: Under what circumstances is the experimentwise alpha level a concern?
To test the null hypothesis that the mean waist size for males under 40 years equals 34 inches versus the hypothesis that the mean differs from 34, the following data were collected: 33, 33, 30, 34, 34, 40, 35, 35, 32, 38, 34, 32, 35, 32, 32, 34, 36,..
Note that Σ x = 2233 and Σ x 2 = 138,053. At the 5% level of significance, can the instructor conclude that the new mean is different from 64?
Setup the alternative hypothesis that will test the claim that the percentage of women preferring white wine is 25% higher than men.
A recent study of cardiovascular risk factors reports that 30% of adults meet the criteria of hypertension. if 15 adults are assessed, what is the probabiliy that?
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