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Sports and Leisure
South Carolina Department of Natural Resources personnel enforce hunting and fishing regulations and conduct routine safety checks on recreational boats. Past experience indicates that 15% of all boats inspected have at least one safety violation. Recent accidents on lakes in South Carolina have prompted calls for more extensive inspections. A random sample of recreational boats will be obtained and inspected. If there is evidence that the true proportion of boats with safety violations, p, is more than 15%, a methodical inspection of every boat launched at popular sites will be started.
a. State the null and alternative hypotheses in terms of p.
b. Describe a type I error and a type II error in this context.
c. What happens to the probability of a type I error as the value of p approaches 0.15 from the right (that is, 0.20, 0.19, . . .)?
Find the five-number summary for Group 1.- Find the five-number summary for Group 2.- Compare the values of the range for the two groups.
consider a population consisting of ve values 1 3 3 5 7.a find the population mean.b list all possible samples of size
Those who had consumed the vodka tonics had 35% more cravings than those who did not. Assuming that the assignment of subjects to the treatment (vodka) and control groups was made at random, do you think there are any confounding factors that would..
an accounting firm is planning for the next tax preparation season. from last years returns the firm collects a
A jar contains 8 red marbles, 9 blue marbles, and 6 green marbles. Two marbles are chosen at random. What is the probability that one is green and the other is blue?
gymnorhina tibicen mist netted 25 adults from an isolated rural area and 36 from an urban picnic area. she measured the
Given the following observations in a two-way classification with a = 3, b = 4, and c = 2, compute the F-statistics used to test that all interactions are equal to zero (Y u = 0), all column means are equal (/Jj = 0), and all row means are equal (a:;..
Some sources advocate a somewhat more restrictive type of doubling-sampling plan in which r1 = c2 + 1; that is, the lot is rejected if at either stage the (total) number of defectives is at least r1 (see the book by Montgomery).
The regulatory board of health in a particular state speci?es that the ?uoride levels in water must not exceed 1.5 parts per million (ppm). The 20 measurements given here represent the randomly selected daily early morning readings on ?uoride leve..
A lending firm knows a financial application takes on average 12.8 minutes and has a standard deviation of 2.1 minutes. Conduct a full hypothesis test for this problem
suppose referendum to increase funding for education is on the ballot in a large town population over 100000. an exit
there are 10 swedes and 7 finns. we should choose a committee that consists of 9 people. the committee has a chairman
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