Fishing: Northern Pike Athabasca Fishing Lodge is located on Lake Athabasca in northern Canada. In one of its recent brochures, the lodge advertises that 75% of its guests catch northern pike over 20 pounds. Suppose that last summer 64 out of a random sample of 83 guests did, in fact, catch northern pike weighing over 20 pounds. Does this indicate that the population proportion of guests who catch pike over 20 pounds is different from 75% (either higher or lower)? Use a = 0.05. (c) Find the P-value of the test statistic. Sketch the sampling distribution and show the area corresponding to the P-value.

3. Today, in a random sample of 30 people, Trump received an approval rating of 30% world- wide. On his last day in office, Trump had an approval rating of 22% world-wide. Using a hypothesis test, is his approval rating getting better?

3

In June 2012 the Gallup organization conducted a poll using a random sample of 1004 adults, aged 18 and older, living in all 50 U.S. states and the District of Columbia. When asked, "On the whole, do you think immigration is a good thing or a bad thing for this country?" 66% responded "a good thing." The news report adds, "For results based on the total sample of national adults, one can say with 95% confidence that the maximum margin of sampling error is ±4percentage points." Based on this report, we can conclude that:

The student body at many community colleges is considered a "commuter population". The following question was asked of the Student Affairs Office at one such college: "How far (one way) does the average community college student commute to college daily?" The office answered: "20.0 miles or less." The inquirer was not convinced of the truth of this and decided to test the statement. She took a random sample of 55 students and found a mean commuting distance of 21.5 miles. Test the statement made by the Students affairs Office at a significance level of 0.01. Assume that the population standard deviation is known to be 5.1 miles. Use the P-Value Method of Testing.In your work space below, you will need to have -1.  The null hypothesis, Ho 2.  The alternative hypothesis, H13.  The test statistic 4.  The type of test(left, right, two-tailed) and the p-value 5.  The decision to accept Ho or reject Ho

Give 5 examples of situations using this:  1. Retrospective Study 2. Observational Study 3. Designed Experiment

The following is a random sample of men and women residents of Iowa. Do these data suggest a difference between the sexes in average spending on Christmas gifts in 2020? Follow the four steps for a hypothesis test.   Male Male Female Female 250 450 300 375 400 300 350 400 425 350 500 450 350 325 425 300 500 425 400 350 400 200 350 370 375   450 400

An unbiased sample is a good representation of the population. True or False

Suppose the manager agrees to pay each employee a$50bonus if they meet a certain goal. On a typical Saturday, the oil-change facility will perform 35 oil changes between 10 A.M. and 12 P.M. Treating this as a random sample, at what mean oil-change fime would there be a10%chance of being at or below? This will be the goal established by the manager. There would be a10%chance of being at or below minutes.

Chapter 13 The Athletics Director at Cypress College wanted to test whether the grades of student athletes is different across the warlous sports. Student athletes playing basketball, baseball, and volleyball were randomly selected and their GPAS were recorded. The data is glven In the table below. Test the hypothesls that there Is a difference In the mean grade polnt averages of the 3 groups. Determine the P-Value. Baseball Volleyball Basketball 3.2 1.8 3.0 2.1 1.9 2.7 2.6 2.1 2.8 3.5 3.3 2.5 3.1 2.5 2.6 O 0.2286 O 0.3699 O 0.1652 O 0.2498