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2. Suppose than an instructor want wants to investigate whether the font used on an exam affects student performance as measured by the final exam score. She uses four different fonts (time , courier, helvetica, comic sans ) and randomly assigns her 40 students to one of these four fonts. a. Identify the explanatory and response variables in this study. b. Is this an observational study or a randomized experiment? Explain how you know. c. Even though the subjects in this study were not randomly selected from a population, it's still appropriate to conduct an analysis of variance .Explain why.
What type of variables you have. Qualitative or Quantitative and indicate what type of measurement scale is being used.
Use a regression model with dummy variables as follows to develop an equation to account for seasonal effects in the data. Qtr1 = 1 if Quarter 1, 0 otherwise; Qtr2 = 1 if Quarter 2, 0 otherwise; Qtr3 = 1 if Quarter 3, 0 otherwise.
Explain why you would choose the specific test.
A product is made up of two subsystems in parallel. Subsystem one consists of ten elements in series with a failure rate if 1/100. The second subsystem consists of 5 elements in series with a failure rate of 1/200. What is the overall reliabili..
Find the probability that there are exactly 2 prescriptions for this drug in a given week and find the probability that there are no more than 5 prescriptions for this drug in a given week.
What is the critical path and project completion time for the budgeting process and what is the cost to complete the project based on the Normal Times?
A sample of 10 executives indicated that they spent an average of $11.30 with a sample standard deviation of 0.56 on lunch. Let = 0.05. What are the critical values?
The chamber of commerce of a Florida Gulf Coast
advertising for this variable each student must fill in the table with whatever random values each student wants.
Age Category Insurance Health Insurance
Examine the relationship between Traced by MedicalAid. Is there evidence that whether or not a child was traced is independent of whether the mother had medical aid
Use the Excel Analysis ToolPak to find the linear correlation coefficient for the systolic and diastolic measurements.
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