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A machine fille containers with a mean weight per container of 16.0 oz. If no more than 5% of the containers are to weigh less than 15.8 oz, what must the standard deviation of the weights equal?
What is the answer to the following unsorted data shows the number of traffic tickets given each day by Deputy Fife over the last eleven days.
Assume the chief does not want his officers to cite a car for speeding unless they are 99% sure that it is travelling at 58 miles per hour or faster. What is the minimum estimate of speed at which a car should be cited for speeding?
Three unrelated people go for dinner to a Chinese restaurant which uses MSG in its food. Each person has a 10% probability of developing an adverse reaction to the MSG.
Can researcher conclude that humidity has significant effect on eating behavior? Use two-tail test with α = .05. Calculate estimated Cohen's d and r2 to measure size of treatment effect.
RESEARCHERS at a university conducted experiments with poplar trees. Listed below are weights (kg) of poplar trees given no treatment and poplar trees treated with fertilizer and irrigation.
Point is uniformly distributed in the unit sphere in three dimensions. a) Determine the marginal densities of the x, y, and z coordinates.
Finding probability for the given values of the uniform density curve
Suppose population standard deviation for those drinking regular coffee is 1.20 cups per day and 1.36 cups per day for those drinking decaffeinated coffee.
A mathematical placement test is given to all entering freshmen at a small college. A student who receives grades below 35 is denied admission to the regular mathematics course and placed in a remedial class.
A sample of n observations is taken from a population. When performing statistical inference about a population variance, the appropriate chi-square distribution has:
According to an early CDC study of 21 patients infected with the swine flu, the average incubation period was 7 days with a sample standard deviation of 4.5 days.
When performing a 2-way ANOVA with replication you must first: A) Perform an interaction hypothesis test B) Take out the error because you ran replicates and error makes no sense with replicates
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