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A project manager at COMSOFT corporation has collected statistics on the organization's software development process. He has the size of each project in number of lines of code for the past 20 projects and the number of lines of code in error discovered during code reviews for each project. Describe what type of control chart you can use and how do you calculate the control limits (provide formula) to check if the calculate the control limits in this organization is in control.
By how much does the standard error of x-bar change if the sample is increased to 100?
Statistics Questions Set: If the mean number of hours of television watched by teenagers per week is 12 with a standard deviation of 2 hours, what proportion of teenagers watch 16 to 18 hours of TV a week? (Assume a normal distribution.)
Does this data provide evidence at the .05 significance level that there is a difference in the proportion of humorous ads in British versus American trade magazines? Please show work.
Prepare a paper examining a regression analysis on your collected data. Begin by describing the research issue, problem, or opportunity and the accompanying data. Then, perform a regression analysis on your data.
What is the probability that the cereal would be high fiber? In other words, what is P (high fiber)?
A researcher selects a random example of college students and measures number of hours they spend watching television per week and their grade point average.
Test the hypothesis. Will you reject or not reject the null hypothesis at α = 0.05
For population with mean of µ=60 and a standard deviation of s=24. Determine the z score corresponding to each of following samples.
Conduct the hypothesis test and compute the p-value. At a 0.05 level of significance, what is your conclusion?
A market research company surveyed consumers to determine their ranked preferences of energy drinks among the brands Monster, Red Bull, and Rockstar.
If student is chosen at random, determine the probability that he or she is sophomore and owns a credit card.
You're designing a survey to assess employee satisfaction. Provide a question that will produce: Develop five demographic questions to measure gender, age, years of experience, level of education, and ethnicity.
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