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A study was designed to compare cardiac demands of snow shoveling to those of using an electric snow thrower. Ten subjects cleared tracts of snow using both methods and their maximum heart rates (beats per minute) were recorded. In this sample, the mean maximum heart rate during manual snow shoveling was 175 and the standard deviation was 15. Assuming the sample data have a bell-shaped distribution, you need to construct a 95% confidence interval estimate of the population mean for those who shovel snow. What value should you use for the standard error
suppose two dice are rolled. let x be the random variable measuring the sum of the two numbers rolled.a find the
what is the probability that a random variable has a value between 1.75 and 7.35 if that random variable has a uniform
a testing device is claimed to have high reliability insofar as pabpacomplementbcomplement p where adevice indicates
Suppose that the auto loans from a bank are normally distributed with a mean of $20,000 and a standard deviation of 3,100. 10% of loans will be for more
The following is the heart rate for 10 randomly selected patients on the unit. Find the mean, variance, and standard deviation of the data using the descriptive statistics option in the data analysis toolpak.
Suppose a conference or 1000 educators shows that 356 of the group believes that due dates should be removed. What is the 95% CI for the population of educators who believe that due dates should be removed. Show all your steps to solve this proble..
a regional track championship has decided that they will invite the fastest 15 of runners in their region runners with
Use the given information to find the P-value. Also, use a 0.01 significance level and state the conclusion about the null hypothesis
Can you conclude that the variances of the breaking strengths of natural and synthetic fibers are different? Use a level of significance α of 0.05. What assumptions are necessary to perform this test?
the world series of baseball is to be played by team a and team b. the first team to win 4 games wins the series out
Suppose the force acting on a column that helps to support a building is a normally distributed random variable X with mean15 kips and standard deviation 1.55 kips. Compute the following probabilities
According to a June 2009 report (http://www.alertnet.org/thenews/newsdesk/L31011082.htm), 68% of people with "green" jobs in North America felt.
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