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What are Bernoulli trials?
What is the relationship between Bernoulli trials and the binomial random variable?
Decrease your sales price by $5 in order to increase sales by 5,000 units. Which of the above alternatives would your choose to increase profits?
When would you use hypothesis testing and when would you use confidence intervals?
What value is standard deviation for this data? What type of probability is this?
First, describe in your own words (no direct quotes, please) what a dummy variable is and its purpose in regression analysis. Secondly, provide an example of where you might use a dummy variable from your own professional experience.
a researcher wants to know the average height of trees in a plot of land. the researcher randomly samples 18 trees and
Kim starts to walk 3 mi to school at 7:30 a.m. with a temperature of 0 degrees F. Her brother Bryan starts at 7:45 a.m. on his bicycle, traveling 10 mph faster than Kim.
Show how these four examples, when examined together, demonstrate the implementation of programs that varied on the role of government in addressing the situation, on the specific kinds of activities upon which they concentrated, and on the method..
A financial institution has decided to open an office in a certain commu- nity if it can be established that the median annual income of families in the community is greater than $90,000. To obtain information, a random sample of 80 families was ..
two different analytical tests can be used to determine the impurity level in steel alloys. six specimens are used and
whenever the population standard deviation is unknown and the population has a normal or near-normal distribution which
The data in Table 22.1 is a record of the measurements determined over the ?rst hour of a shift. Obtain an X-bar chart and identify whether or not the manufacturing process is "in-control".
When a researcher has two samples with two means, one of the assumptions for two samples is independence of between the two samples. What does this mean? What happens if the independence assumption is violated?
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