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The physical fitness of an athlete is often measured by how much oxygen the athlete takes in (which is recorded in milliliters per kilogram, ml/kg). The mean maximum oxygen uptake for elite athletes has been found to be 80 with a standard deviation of 8.1. Assume that the distribution is approximately normal.
a) What is the probability that an elite athlete has a maximum oxygen uptake of at least 75 ml/kg?
b) What is the probability that an elite athlete has a maximum oxygen uptake of 50 ml/kg or lower?
A researcher was interested in determining whether incentives affect the response rate in surveys. A simple random sample of 50 adult residents of a large city was selected. All were mailed a survey and promised a check upon returning a completed ..
The margin of error for a 95% confidence interval estimate for the proportion of all students with cell phones is
Test hypothesis that both propellants have same mean burning rate. Utilize α=0.05. Compute the P value.
Then use ogive to estimate median and first and third quartiles. Also utilize it to reply following question: What percent of 60 mutual fund loads are less than 75.
A random sample of students is selected, and each one is asked to try first brand A and then brand B, or vice versa with the order determined at random.
These can have a large impact on tenure and promotion decisions at many institutions. One particular instructor had ratings in 3 courses in one semester as given by the table below for the statement "The instructor is an excellent teacher.
Using the following data on 15 workers, construct an exact 95% confidence interval for µ.
In this paragraph, be sure to make it clear how you handled the issue of conducting three planned comparisons. Also provide the ANOVA summary table for these results.
Analyze the data using linear contrasts to make the following comparisons:
For each problem, compute a Welch F-statistic and determine whether or not significant differences exist among the treatment conditions.
If a blue ball is selected you win nothing. Let X be the amount that you win. The expected value of X and let the random variable X be a random number with the uniform density curve given below
A journal polled its readers to determine the proportion of wives who, if given a second chance, would marry their husband again.
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