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Of 357 randomly selected medical students, 30 said that they planned to work in a rural community. Find a 95% confidence interval for the true proportion of all medical students who plan to work in a rural community.
Create a bell curve chart that shows the number of men needed per day for a 10,000 man hour job. The start date is 1/1/2008 and the end date is 6/1/2008.
Scientist does n ot believe that water ph is 7. She wants to test the null hypothesis that the true level of ph is 7 at the .05 significance level. Her alternative hypothesis is that the water does not have a ph of 7. Which p-value will she reject..
Find a 98% confidence interval for the percentage of all eighth graders who have used alcohol. Round the upper and lower bounds to three decimal places.
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
Using the .05 significance level, can we conclude that there is a positive association between the two variables?
If true explain and if false give an example. a. The significance level of a statistical test is equal to the probability that the null hypothesis is true. b. If the significance level of a test is decreased, the power of the test would be expected t..
Assume salaries are normally distributed with a standard deviation of $4,500. What is the probability of a new graduate receiving a salary between $45,000.
The appropriate use of multiple regression depends on being able to make four basic assumptions about the data being used to develop the regression model:
A physiologist wishes to study the effect of birth control pills on exercise capacity. Five female subjects who have never taken the pill have their maximal oxygen uptake measured during a treadmill session.
You are reviewing a scientific study where the epidemiologists sampled 1000 people from Charleston, South Carolina and measured variation at two loci, A and B.
How would you interpret the findings of a correlation study that reported a linear correlation coefficient of +0.3?
Printed circuit cards are placed in a functional test after being populated with semiconductor chips. A lot contains 140 cards, and 20 are selected without replacement for functional testing.
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