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Question: According to the standards of the battery of tests measuring various aptitudes of employees assigned to manual tasks, the national average (m) for the test allowing the visual-motor coordination of an individual to be assessed is 90 with a deviation of type(s) of 15. The results are also considered to be normally distributed. A group of 69 individuals from a processing plant in the Estrie region obtained an average of 86.4 for this test. Assuming that this group is a representative sample of the population of employees assigned to manual tasks, can we say at the significance level of 0.05 that it corresponds to the national average?
No pressure was used for the controls, and their bleeding time was found to have a mean of 1.524 minutes and a standard deviation of .614min. Give a 95% confidence interval for the difference in bleeding times. Do you think pressure increases mean..
Why is a random variable said to be "random"?- Indicate whether each of the following random variables is discrete or continuous.
Compare the women to the men using a dotplot. What does your plot show you about the difference between the men and the women?
Find the one-sided 99% prediction interval for the caffeine content of the next cup of coffee, again claiming "at least...."
two cars leave towns 1000 kilometers apart at the same time and travel toward each other. one cars rate is 14
q1. the sum of squared deviations of each score from the grand mean is the .q2. what is the effect of a conservative
The International Coffee Association has reported the mean daily coffee consumption for U.S. residents as 1.65 cups. Assume that a sample of 38 people from a North Carolina city consumed a mean of 1.84 cups of coffee per day
Popularity of a first name. The Social Security Administration maintains lists of the top 1000 names for boys and girls born each year since 1879.30
Determine the average amount of time that a guest spends checking in. How would this change under each of the state options?
One factor in the development of tennis elbow, a malady that strikes fear into the hearts of all serious players of that sport, is the impact-induced vibration
Suppose that two drugs are both effective in prolonging length of life after a heart attack. Substantial statistical evidence indicates that the mean life.
between 525 and 550 of them (inclusive) will result in twins being born?
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