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A biologist considered studying the effects of various environmental pollutants on the health of mice by using a 27- 4 fractional factorial design.
a. How many factors are involved? How many levels are there for each factor? How many trials will be required for a single replicate of the experiment? Can a test for lack of fit be obtained?
b. The biologist decided to augment the design with six center-point replicates. Can a test for lack of fit now be obtained? If so, can the biologist determine which factors caused a curvature effect?
There are 878 students at penn state's college of medicine in Hershey, PA. Of those 878 students, 408 are Pennsylvania residents. Thus, 46.5% of all Penn State college of Medicine students are Pennsylvania residents. This value 46.5% is a poplulat..
the piron software company currently develops marketing software for primarily service-based organizations. from a
Identify the null and alternative hypothesis, test statistic, P-value,critical values and state the final conclusion that addreses the original claim:
When summarizing interval-ratio variable data using descriptive statistics, what do we lose in our understanding of a sample if we just report the mean and not any measures of dispersion such as the interquartile range or standard deviation?
consider the following. give your answers correct to two decimal places.a find the standard score z such that the area
The breaking strengths of cables produced by a certain manufacturer have a standard deviation of 96 pounds. A random sample of 50 newly manufactured cables has a mean breaking strength of 1950 pounds.
How many such amplifiers connected in a cascade of identical non inverting stages would she need to achieve her goal? What is the 3-dB frequency of each stage she can use? What is the overall 3-dB frequency?
Using the original data, test at the 5% significance level that the population standard deviation of studying times is greater than 4 hours.
What is the population of interest? Find the gas prices of regular, unleaded gasoline at 45 gas stations in the Milwaukee area. You can do this using the suggested websites below or you can drive around and record prices. Note that these websites..
Construct a 95% confidence interval estimate of the proportion of deaths in the week before the holiday to the total deaths in the week before and the week after the holiday.
let s be the event that a randomly chosen male age 18-24 is republican. let c be the event that a randomly chosen male
What is the probability that the random variable has a value between 0.6 and 0.8
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