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Twelve people (six smokers and six non-smokers) are randomly selected and have their body temperature measured five minutes after undergoing the same physical exercise. The results are as shown:
Smokers 98.4, 98.7, 98.8, 98.9, 99.2, 99.3//// Non-smokers 97.9, 98.1, 98.2, 98.5, 98.6, 99.0
Carry out a Wilcoxon rank-sum test to determine if there is sufficient evidence at the 2.5% significance level to support the hypothesis that, after exercise, the body temperature of smokers is higher than that of non-smokers
A company's specific mix of individual employees combines to help produce an organization's culture and feel. In this assignment, you will evaluate how an unbalanced mix of employees can affect a company.
What is the sample size n for this survey?- What is the count X of community banks that expect to acquire another bank?
Check to see if the following sample sizes are large enough to be approximated by a normal curve?
A sample of 32 auction prices of grandfather clocks, along with their ages and the number of bidders, is given below.
Find the margin of error for this poll if we want 90% confidence in our estimate of the percent of American adults who do not use e-mail.
A container of liquid laundry detergent promises over 100 loads from the bottle. You sample 45 bottles and find a mean of 102 loads with a standard deviation of 3.75 loads. At the 0.01 level of significance, is the manufacturer's claim supported?
Sports and Leisure The popular sport of mountain biking involves riding bikes off-road, often over very rough terrain.
Does the current system of alternating ballparks even out the home field advantage? How often will the team that begins at home win the series?
a history class has 75 members. if there is a 12 absentee rate per class meeting nd the mean variance and standard
Big heads? The army reports that the distribution of head circumference among male soldiers is approximately Normal with mean 22.8 inches and standard deviation
Radioactive decay. An experiment was conducted using a Geiger-Mueller tube in a physics lab. Geiger-Mueller tubes respond to gamma rays and to beta particles (electrons). A pulse that corresponds to each detection of a decay product is produced, a..
A thin circular sheet of aluminum has a radius of 20 cm and a thickness of 0.5mm. Find the mass of the sheet.
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