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Rework Exercise 38, basing the decision on the P-value corresponding to the observed value of the test statistic.
Exercise 38
Sample surveys conducted in a large county in a certain year and again 20 years later showed that originally the average height of 400 ten-year-old boys was 53.8 inches with a standard deviation of 2.4 inches, whereas 20 years later the average height of 500 ten-year-old boys was 54.5 inches with a standard deviation of 2.5 inches. Use the four steps in the initial part of Section 1 and the 0.05 level of significance to test the null hypothesis μ1 - μ2 = -0.5 against the alternative hypothesis μ1 - μ2
show that in mlreg multiple linear regression the residual vector e is orthogonal to both the design matrix x and the
You can just switch on the heater of your swimming pool / sauna / living room etc. But if you want to be calculate what time you should switch it on
the table below shows lifetime peptic ulcer rates per 100 population u for various family incomes x as reported by the
Growth of pine trees. The Department of Biology at Kenyon College conducted an experiment to study the growth of pine trees. In April 1990, volunteers planted 1000 white pine (Pinus strobus) seedlings at the Brown Family Environmental Center. The ..
Robert Smith of the "Merrill Lynch Pierce Fenner & Smith" families is engaged in full-time fundraising. He has been quite successful at this because he brings a very structured approach to the process:
The following show the hours of sleep on weeknights for a sample of individuals age 49 and younger and for a sample of individuals age 50 and older.
the filling variance for boxes of cereal is designed to be .02 or less. a sample of 41 boxes of cereal shows a sample
michael sullivan son of the author decided to enroll in a reading course that allegedly increases reading speed and
A ski company in Vail owns two ski shops, one on the east side and one on the west side. Sales data showed that at the eastern location there were 56 pairs of large gloves sold out of 304 total pairs sold.
A prison official wants to estimate the proportion of cases of recidivism. In examining 250 convicts there are 65 cases. with 99% confidence interval what is the range? How do you figure this type of problem?
let xt be equal to the number of particles emitted from a radioactive source during a time interval of length t. assume
during the period of time that a local university takes phone-in registrations calls come in at the rate of one every
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